This isn't true. Of course there's a lot of math under the hood for Watson and in particular for Chef Watson. Yes, various parts of Watson also have the ability

This isn't true. Of course there's a lot of math under the hood for Watson and in particular for Chef Watson. Yes, various parts of Watson also have the ability to do arithmetic too - although it's not designed to be something that you can ask to solve your differential equations homework. What we have done (as I work on Watson and specifically on Chef Watson), is give Watson the ability to parse natural language recipes and information about ingredients from a variety of different sources. We've also hooked it up with nutrition information and various food databases - including some that break down the individual chemicals in each ingredient and identify the way in which different ingredients and components relate to one another.