Well, now that I've done a Google search on the phrase, "Also some recipes use "rennet tablets" something that I'm not familiar with," and read Sourdough (Hawaii)'s
review of the book, "Old-Fashioned Homemade Ice Cream: With 58 Original Recipes (Paperback)," I feel compelled to point out that the review was posted on Sept. 8, 2000. Wondering just how much googling was going on in 2000, I found myself, in a few short clicks of the mouse, at Google's
corporate history page. While Google was certainly off and running in September of 2000, the earliest entry I can find on rennet tablets is on a
page about cheese making, posted on November 2, 2000.
So there.