20 (smaller) onions2 cups of wine vinegar2 cups of water2 tablespoons of salt1/5 cup of olive oil2 cloves of garlic3 bay leaves1 tablespoon of mustard seeds1 tablespoon of oregano1 tablespoon black pepper (whole, without grinding)1 tablespoon of red pepper flakes1 big jar with a lid
Preparation
Peel all the onions and rinse them well.
In a saucepan, prepare the seasoning. Boil all ingredients (vinegar, water, olive oil, salt, garlic, bay leaves and spices) together.
Heat the jar in hot water.
Place onions in the jar and add the boiling seasoning over the onions.
Let it cool slightly and close the lid.
Store in the refrigerator for at least 3 weeks.
The longer you let the onions preserve, the better the onions will taste.
Adapted from a recipe by easyportugueserecipes.com