Base Culture, a Paleo, gluten-free, and grain-free baked goods and snack company, announced the newest addition to its portfolio, Sourdough Bread. Hitting shelves at Whole Foods Markets in June 2021, Base Culture’s Sourdough Bread is a 100% Paleo and 100% Keto Certified, made with wholesome, better-for-you ingredients and only 4g of net carbs.