So... everyone is talking about good bacteria in their yogurt. You can get similarly awesome bacteria from sauerkraut and other fermented vegetables. Here I have a recipe for fermented salsa. It is super tasty and keeps in the fridge for quite a while. Plus, you can get that good bacteria piled on top of a good tortilla chip!
The recipe is here: http://www.passionatehomemaking.com/2010/10/the-benefits-of-lacto-fermentation-lacto-fermented-salsa-recipe.html.
No need to copy it here, I guess.
P.S. Your grandmother probably grew up eating fermented vegetables. Ask her about them.