although the disclosure hereof is detailed and exact to enable those skilled in the art to practice the invention , the physical embodiments herein disclosed merely exemplify the invention , which may be embodied in other specific structure . the scope of the invention is defined in the claims appended hereto . referring to fig1 reference numeral 1 indicates an installation of various pieces of equipment used in the manufacture of natural pasta filata cheese , such as mozzarella . briefly , reference numeral 3 represents a vat into which previously pasteurized milk is pumped . the milk may be whole milk , in which case the finished mozzarella cheese would have a minimum of 45 percent fat on a dry basis as governed by title 21 of the code of federal regulations . alternately , the milk may be partially skimmed , in which case the finished cheese would have between 30 percent and 45 percent fat on a dry basis . a starter culture and rennet are added to the milk in the vat 3 . the starter may be made up of streptococcus thermophilus , lactobacillus delbrueckii , or lactobacillus helveticus . the starter may be a blend of the foregoing , or used individually . one source of the starter bacteria is chr . hansen , inc ., of milwaukee , wis . that company is also a source of rennet . the starter and rennet cause the milk to coagulate , which is then cut into curds . after the curds have been cooked and stirred the desired amount , some of the whey is removed . the remainder of the curds and whey are pumped to an enclosed finishing vat ( efv ) 5 . there the curds are further stirred , and additional whey is drawn off . the curds are washed and salted . the curds are then transferred to a mixer 7 , where they are melted by hot water . the molten curds are extruded through one or more tubes 9 , which gives mozzarella its characteristic stringy texture . the extruded cheese is packed in molds 11 and sent to a chill tunnel 13 . the cool and firm blocks of cheese are removed from the molds 11 and deposited in a brine solution 15 . finally , the blocks are packaged in the desired way and put in cold storage . the resulting mozzarella cheese is an entirely natural product . it has a characteristic white color , and a taste and texture peculiar to the amount of fat in the milk originally pumped into the vat 3 as well as to the starter culture . in accordance with the present invention , the characteristic white color of natural mozzarella as manufactured by the normal process is replaced by the yellowish color of a natural cheddar cheese . the cheddar color in the mozzarella cheese is obtained by adding a natural colorant 17 to the vat 3 at the time the pasteurized milk is pumped into the vat . a preferred source of the yellowish color is annatto , which is also commonly used as the colorant for natural colby and cheddar cheeses . the amount of annatto or other colorant is preferably between approximately 0 . 5 ounces and 3 ounces per 1 , 000 pounds of milk . one source of the colorant is chr . hansen , inc ., of milwaukee , wis . in all other respects , the process for making the finished cheese 19 is identical to the process for making natural mozzarella as outlined above and as well known in the art . the finished cheese 19 may be further processed , if desired , such as shredding , before it is packaged and shipped to the end user . the finished cheese 19 may have the moisture content of low moisture mozzarella ( 45 percent to 52 percent moisture ), or it may have the moisture content of normal moisture mozzarella ( 52 percent to 60 percent moisture ). the final cheese 19 is identical to natural mozzarella except that the finished cheese is the color of colored cheddar ( no . 4 to no . 10 on the nci color chart ) rather than naturally white . the cheese of the invention thus possesses all the desirable flavor and other characteristics of mozzarella , such as its desirable melting characteristics , but it also has the attractive yellowish color of natural cheddar cheese . the cheddar appearance is highly desired by many consumers , whether they eat the cheese 19 in the solid state or in the melted state . the finished cheese 19 thus serves as a cheddar alternative , having the appearance of cheddar but the low sodium as compared to processed cheese , high protein , and lesser fat release in cooking of natural mozzarella alternates . further in accordance with the present invention , cheese made generally according to the process for making natural mozzarella can have both a cheddar color and a cheddar flavor . turning to fig2 an installation 21 for making natural mozzarella is shown . pasteurized whole or part skim milk is pumped into the vat 22 . a natural colorant 25 , such as annatto , is added to the milk . the starter culture and rennet are added to the milk in the usual manner . after much of the whey has been drawn off , the curds and remaining whey are pumped to the efv 27 . after the remainder of the whey has been removed , a starter distillate 29 is added to the curds in the efv . the starter distillate 29 may be in either liquid or powder form . a particularly desirable starter distillate 29 is one that provides a butter flavor . a suitable starter distillate is marketed by gamay flavors of new berlin , wis . a preferred quantity of starter distillate is between approximately 0 . 05 percent and 0 . 15 percent by weight of the finished cheese 23 . another satisfactory source of starter distillate is chr . hansen , inc ., which is used at a rate of approximately one to two grams per pound of curd . preferably , the starter distillate is added to the salt in the efv . in the efv 27 , the starter distillate 29 is thoroughly mixed with the curds and whey to impart the butter flavor . the curds are mixed , extruded , molded , chilled , and brined in the usual way for natural mozzarella cheese . the finished cheese 23 possesses all the usual characteristics of natural mozzarella , such as its stringiness , fat content , and moisture content , but it also has the color characteristics of natural cheddar plus a buttery taste . as mentioned , the finished cheese 23 may be either full fat or reduced fat depending on whether whole or part skim milk was used in the vat 22 . now turning to fig3 an installation 33 of natural mozzarella cheesemaking equipment is substantially identical to the installations 1 , 21 , and 21 ′ described previously . whole or part skim pasteurized milk is pumped into the vat 35 . natural annatto colorant 37 is also added to the vat 35 . in addition , a quantity of natural american style cheese 38 is added to the vat 35 . the american style cheese may be added at any time after the milk coagulum has been cut . the american style cheese 38 may be shreds or fines . suitable american style cheeses are cheddar , colby , and montery jack . however , we prefer that the american style cheese be cheddar . the quantity of american style cheese is between approximately one percent and 25 percent , with the preferred quantity being between approximately five percent and ten percent by weight of the finished cheese 39 . after the colorant 37 and american style cheese 38 have been added to the vat , the remainder of the cheesemaking process is identical to the process for making natural mozzarella cheese . adding the american style cheese at the upstream end of the mozzarella making process maximizes its ability to impart its color and flavor to the milk and curds in the vat . in particular , early addition of the american style cheese allows it to add its natural flavor to the new mozzarella cheese curds by means of the bacterial action of the starter cultures used to make the american style cheese . cultures used for american style cheeses are lactic acid producers , usually lactococcus lactis subsp . cremoris or lactococcus lactis subsp . lactis . one source of such cultures is chr . hansen . a further advantage of the present invention is that , unlike some prior processes , including those of the u . s . pat . no . 5 , 902 , 625 patent , undried american style cheese is suitable for adding to the natural mozzarella . the color and flavor of the american style cheese carries through the rest of the mozzarella making process . the resulting finished cheese 39 has unique characteristics of a blend of natural mozzarella and cheddar , with the color and flavor of cheddar but the cooking properties of mozzarella . in fig4 american style cheese 41 is added to the efv 43 of mozzarella cheesemaking equipment 45 . the kinds and properties of the american style cheese 41 may be the same as those used to make the finished cheese 39 of fig4 . adding the american style cheese 41 to the efv 43 is preferred , because the integration of the american style cheese into the mozzarella curds , plus the recovery of the american style cheese , is then optimized . american style cheese may be added to the efv at any time after or during pumpover of curd and whey from the make vat . the resulting finished cheese 47 is substantially identical to the finished cheese 39 described previously in connection with fig3 . [ 0035 ] fig5 shows an installation 57 of equipment for making natural mozzarella cheese . natural annatto colorant 59 is added to the vat 61 as described previously . both a starter distillate 63 and a quantity of american style cheese 65 are added to the efv 67 . the kinds and quantities of the starter distillate 63 and american style cheese 65 may be as described previously . the finished cheese 69 possesses a unique blend of color , flavor , texture , and cooking characteristics unlike any other cheese , whether natural or processed . in summary , the results and advantages of different natural cheeses can now be more fully realized . the present invention provides both cheese alternatives to consumers that were not previously available , as well as new methods of making cheese . this desirable result comes from using the combined functions of the natural colorant , such as a colorant used with cheddar cheese , together with mozzarella cheese . the colorant gives natural mozzarella a cheddar appearance without affecting any of the other characteristics of the natural mozzarella . as a further choice , the cheese of the invention can include a starter distillate that provides a desired flavor , such as butter , to a cheese that is made in the manner of natural mozzarella . when used with a natural colorant , the resulting cheese product has the appearance of cheddar and the flavor of butter despite the fact that it melts and has the texture of mozzarella . relatively small amounts of a natural american style cheese , such as cheddar , can be added with the colorant to cheese made according to the mozzarella process . the american style cheese further contributes to giving the resulting cheese cheddar - like qualities . using a starter distillate with the american style cheese and colorant produces a further option of a cheese that is manufactured primarily as a mozzarella cheese . it will also be recognized that in addition to the superior characteristics of the cheese of the invention , its cost is only minimally more than the cost of natural mozzarella cheese . in fact , because of the anticipated consumer acceptance of the invention , increased production is expected to negate any increase in ingredient cost . thus , it is apparent that there has been provided , in accordance with the invention , a cheese with characteristics of different natural cheeses that fully satisfies the aims and advantages set forth above . while the invention has been described in conjunction with specific embodiments thereof , it is evident that many alternatives , modifications , and variations will be apparent to those skilled in the art in light of the foregoing description . accordingly , it is intended to embrace all such alternatives , modifications , and variations as fall within the spirit and broad scope of the appended claims .
a cheese that has the stringy texture and melt characteristics of young mozzarella cheese , but the appearance of cheddar cheese . the cheese is produced by adding a natural colorant to the vat in which the milk is initially cultured . a modified cheese includes a starter distillate that is added to the enclosed finishing vat . the modified cheese possesses the texture and melt characteristics of young mozzarella cheese , but it has the color of cheddar and the flavor of butter . another cheese is comprised of a small percentage of american style cheese added to the curds in either the vat or in the efv . a preferred american style cheese is cheddar . a starter distillate can also be added to the efv along with the american style cheese . in all cases , other than adding the mentioned ingredients , the process for making natural mozzarella cheese is followed from start to end .