This recipe you just add until you like the taste... you can tailor it to your preferences.
Start with two cans of Del Monte mexican recipe stewed tomatoes. Put them in the blender. Add fresh Cilantro leaves (I usually add about 2" loose above the level of the tomatoes) and garlic (this is just your preference - you can use fresh or out of the jar). Blend on lower speeds - the lower the speed the chunkier it will be. You can also add fresh diced onions if you want more texture. Blend them or just chop them to the size you want and mix in.
This tastes like Tostitos restaurant style medium salsa if you make it right. I think the cilantro and garlic vary so much in strength, it's difficult to set an amount to add - just get a bowl of chips out and taste until you get the right amount of flavor.
Good luck!