Add the hot red pepper flakes and salt to taste.

Add to cooked onions, and season with hot pepper flakes.

Season with hot red pepper flakes and set aside.

Season to taste with salt and hot red pepper flakes.

Jalapenos or just hot red pepper flakes will also work.

Add them and the hot pepper flakes to the onion as it cooks.

Remove from the heat and add the hot pepper flakes, taking care not to burn them or they will become bitter.

Even the simple spaghetti with hot pepper flakes, garlic and oil was just what it should be.

Check again for seasonings, adding more salt and hot pepper flakes if needed.

I like the mixture a little piquant, so I've added hot pepper flakes.