When translucent, add the garlic, and almost immediately add the tomato cut in medium chunks. Season with salt and pepper, as well as the aromatic herbs. The cooking should take about 10 minutes approximately. To make it into a sauce, I generally use the immersion blender and do it directly in the pot, being careful of the hot contents. However, if you don't have one, you may use your blender and pour the tomatoes already blended when raw. There will be little difference. I prefer a chunkier sauce, but if you think it's too thick, you may add a little water. However, should I think it's too runny, I add some additional crushed canned tomatoes to thicken the sauce. Also, if you think the flavor is too acidic, correct it by adding a pinch of salt, if not, just leave as is.