The best cook among all my organic characters is undeniably Fairlight. He can cook anything any way anyhow. Vegan, gluten-free, you name it. He can't cook kosher because he's not Jewish but he could cook kosher style if he needed to. Fairlight makes the bestest pies. Dean Winchesters adore him frequently for his pies as much as for his combat skills.

The worst cook among my organics? Valiska. Valiska Courinna is an obligate carnivore who at times only reluctantly sees the need for cooking meat. She has been known to take down a kerrus (deerlike critter) and when she feeds raw bits of it to her thylacine hunting partner, she will also eat some of it herself.

Pacifica can make soup, sandwiches, grilled meat and pasta. She's very proud of herself for having learned.

Ford can cook pretty well. He's got a good grasp of the fundamentals and he can apply them to foods obtained from a very wide variety of dimensions. He is also pretty good at stopping Valiska from eating things that are only barely dead and making her let him cook them.

As for the robutts:

Soundwave makes frilly, foofy, elaborate, ritzy energon gel treats that look like little works of art. He started making them when they were young because they were broke but Ravage loved those little fancy treats. Now he does it in part because he loves people and also in part because it's a calming, meditative activity that focuses him.

Megatron can mix energon and coolant as needed. Loki's kids have taught him to make brownies from a box mix, but he can't eat them.

Ravage would subsist on plain energon from the dispenser and takeout if s/he were not conjunxed to Soundwave.

Laserbeak is not in either her robot or alt mode equipped to do cooking.

Esmeral can make nice things and will help Soundwave in the kitchen; she's the one who downloaded a gummy candy recipe and bought shit tons of sprinkles so they could make human-friendly versions of his treats.

Clobber is surprisingly competent in a cybertronian kitchen.

Glit can make both robot and human food decently well as a good home cook.

Rosanna makes reservations.

I don't trust Buzzsaw in a kitchen any more than I trust him anywhere else.