2 Red Onion, thinly sliced
1½ cups Cider or White Vinegar
3 heaping spoonfuls of Sugar
A big pinch of Salt
a pinch Red-Pepper Flakes, or a Bay Leaf or some Dried Oregano (Optional)
Thinly slice a red onion and put the slices in a bowl or container.
Bring about 1 1/2 cups cider or white vinegar to a boil, and add about 3 heaping spoonfuls of sugar and a big pinch of salt to dissolve.
You can also add a pinch of red-pepper flakes, a bay leaf or some dried oregano, if you like.
Pour the hot vinegar over the onions and let them cool. They’re ready to use right away, and can be stored in the refrigerator for 2 weeks.