Some ideas for Cybertronian foods
Energon, all forms (can be cubed solid via gelatinization, or a cubed liquid) it can also be slurried into a paste which can then be made into doughs and made to form breads, dumplings, wraps, etc. It will have different colors depending on the specific mineral makeups.
Worms! Scraplets in this are nasty little wormlike parasites which burrow into armor, but alternatively, they can also be eaten too. Good fried, fermented, or as a walking around snack in a dumpling or salad or something.
Skace, the worm eaters, are mostly harmless to Cybertronians, as they don't burrow, but they're still aggressive and bite ankles, though occasionally they act more docile. Some city-states have significantly less hostile Skace subspecies which don't get regularly eaten. Their outer shells are hardened metal, and their bones are metal as well, their "meat" is a soft protoform-like substance, which can be cooked, eaten raw, or occasionally turned into jerky.
That yellow fruit is still nameless so far, but it plugs into its own tree, and it has port connectors in case it needs to plug into another, healthier one for nutrients. The pods have no peel, but a tide-pod-like gummy outer layer which can be punctured with one's teeth, though they are SUPER sour. If the layer's successfully removed, they have slides, like a pre-peeled lemon does. If it's un-successful, you just get all the juice in your mouth at once.
Treats like the energon cordial are rarer, being usually event or festival treats, often with a gel outside and a liquified energon center. Some of them may be high-grade energon, or may be specialty blends designed for specific occasions.
Soup! Made with a spiced lubricant broth, cubed solid energon, and sliced skace meat, it's usually pretty popular. One can also add noodles (often naturally occurring tubing/wiring, which can be stripped from planets to make their version of zoodles/squash noodles) or from energon in place of the cubed variety.