Why not just add more enzymes after the stuff cooled sufficiently?

Enzymes you add to food are generally not toxic. If you denature them by getting them too hot, they don't usually renature spontaneously when the food cools down. They'll just act like a gram, or whatever amount, of protein added to your yogurt mix.
Adding fresh enzymes once the milk is cool enough won't hurt anything. Those new, happy enzymes will just do their enzymatic thing, and give you the yogurt you want.

Killed Enzymes in Yogurt
I am creating an HTML table with jQuery's DataTables plug-in. I would like to know if there is a way to group a number of columns together with a Title which describes what the grouping represents. 

In my specific case, 3 of my columns will display an address (Street, City, State). I'd like them to have an additional border around just those columns with a title that indicates to the end-user that those 3 columns represent the address.

I'm considering just changing the background color of those 3 columns which will do the job but I'm wanting the Address title to be displayed. I've seen that rows can be grouped together and sections divided by separators; however, I haven't yet come across anything that makes it possible to group columns together.
