What are Satin Balls? Read mesgs where people have said look them up on here for recipe. Where do you look? Thanks.

Not something I could be bothered making or would want to use to be honest but a quick google brings up tonnes of variations on the recipe here here and here  It is supposed to be excellent for putting weight on but I wonder if green tripe would do just as well :)

Looking at the recipe I dont think I could be bothered to make that either.. Was just curious about it coz I'd seen it mentioned a few times and wondered what it was. Thx again.