I drew this! With a marker on newsprint. After that, I scanned it, then painted the background with an Affinity application, either Designer or Photo. (The original is on a different computer, otherwise I would check.)
I planted onion seeds in our little garden this year. They are growing very well, but no purple skin, like this one. Still not very big, but I'm patient, I can wait.
We have a rule in our house, if one of us eats an onion, the other can too. The idea is one onion breath will cancel out the other.