Cut cabbage and onion
Heat olive oil and vinegar in a small pan. Add bay leaves and salt. Continue heating until a liquid is close to boiling, but do not boil. Let it cool for 5-10 minutes.
Pour the mixture over vegetables, mix well.
Leave to settle at room temperature for several hours, mixing periodically. Cabbage becomes softer and the amount is getting smaller.
Place into a refrigerator. The salad is ready to eat on the next day. It stays fresh for several weeks.