Wurm Food Science update

I recently went back to looking at the code for my Wurm affinity food calculator and decided to rewrite it, cos there were bits that were messy and bugging me. But more importantly, I wanted to see if I could work out why the sums weren't working sometimes. It turns out I had the "magic" number wrong for cornflour, which was because I had the wrong "magic" number for the "hand" tool. The latter is used in so few recipes it took me far too long to realise that was the problem. Now to work my way through all the other recipes that weren't working...