As the DH in a situation almost exactly the same, I would say it thusly:I’m the cook and DH cleans up. I do the grocery shopping too. I have trouble deciding what to make after 35 years, though. But if I ask DH or DS what they want for dinner, I get...crickets. Sigh...Fortunately DS can cook for himself, at least some. No aprons in our house.
DW is an excellent cook, much better than me, so she prepares meals and I clean. She asks for suggestions, but I like everything she prepares and am grateful for anything she does.
I can prep a few meals, but in order to gain the experience needed to improve my skill and take on more meal responsibility we’d both have to suffer through more of my cooking and neither of us want that.
The biggest contribution I can make after 40 years is getting take out that we both enjoy.