It isn't really cooked, but I made dandelion wine for the first time, and it seems to be topping out up at around ~18% abv. It's strong and it's pretty good.
With about 2 quarts of dandelion petals, a couple sliced up oranges, 5 cups of sugar, a few old dried cherries, one packet of wine yeast, and two and a half weeks it made about 5 litres. The most difficult part is separating the petals, it takes some hand strength.
If anyone's interested I'd recommend giving it a shot; people sometimes give you weird looks or ask what you're doing when they see you walking around collecting flowers, but eh, they're the suckers for letting all those dandelions go to waste. You can make dressing out of them too, or just straight up eat them.