Buy the Fody Foods Marinara Pasta Sauce (3-pack) from Amazon, $17.25
Garlic and onion are in so many foods, and are often the biggest headache for low-FODMAP dieters.
Fody's Marinara Sauce doesn't contain either ingredient. In fact, the only ingredients in this sauce are tomatoes, water, tomato paste, extra virgin olive oil, carrot puree, celery puree, salt, and basil. This stuff tastes just as good as the best garlic-filled pasta sauces. For comparison, RAO's makes a great garlic- and onion-free pasta sauce, but Fody's is less expensive.