['Chia seeds. Fiber: 10 grams per ounce. ... ', 'Blackberries and raspberries. Fiber: 8 grams per cup (blackberries); 8 grams per cup (raspberries) ... ', 'Flaxseed. Fiber: 6 grams per two tablespoons. ... ', 'Coconut. ... ', 'Pistachios. ... ', 'Cauliflower. ... ', 'Red cabbage. ... ', 'Mushrooms.']