Since I'm a SAHM, cooked vegetarian for all of us for so many years (H & I both eat some meat now) I can SO relate to your W's kitchen troubles. And my H oft complained about the amount of $ we spent on food.
I felt sensitive about being criticized in this area too even if I knew I had days where I wasn't doing as well. It still really annoys me when my boys tell my H there's not enough to eat! It's such a lot of work!
About you and your W: How are you and she currently relating in other areas?
I like what the other posters have said. Maybe if you phrase it in a way that shows you are helping her with HER job, not making it YOUR job, till she gets better and maybe there could be some working together area in the kitchen.
It has been such a joy lately to me to do some cooking with my H. He really previously found any kitchen work distasteful and has totally changed his attitude. Now it's a "we" regarding food/providing. It's SO much better.
Sometimes I wish I could talk to your W. I feel we have a lot in common.
I'm looking forward to see how this area of your sitch works out
rH
Me54/H47 '08 H is "done" March '12 H moved out Brink of D, December '12 2014 totally reconciled! ...... "I firmly believe in the...absolute possibility of marriage renewal." Jim Conway