Argentine tomato and onion salad is built from a few things that work especially well together: ripe tomatoes, thin onion, sweet red pepper, olive oil and vinegar.
The result is juicy, tangy and lightly crunchy — exactly the sort of fresh side that balances grilled meat. A little dried oregano is optional; good tomatoes do most of the work.
https://www.worldfoodwine.com/recipe/tomato-and-onion-salad-argentina
World Food and WineTomato and onion salad (Argentina)Argentine ensalada criolla: juicy tomato, onion and red pepper with olive oil and vinegar, the classic fresh side for grilled asado.