1 Crack the whole crab legs and place them on a baking tray. 2  Brush the crab legs with butter or oil, seasoning and lemon juice and bake in the oven for 8 - 9 minutes.  Wrap the crab legs in a damp paper towel and cook on high for 2 - 3 minutes.
Confidence votes 34. It depends on what kind of apple they can be red, yellow, green, or skin colored. if you know what I mean. 9 people found this useful.
A change of color to a blue-black or purple color suggests that starch is present. If there is no change in color, this suggests no starch is detectable. Note the change of the iodine to black on the potato (right) but not the apple (left). (10% Tincture of iodine.) Potato contains starch, but apple does not.