Sago/ˈseɪɡəʊ/ Definition 1 of 2Pro Tip 1/3Cooking Ingredient Sago is primarily used for thickening soups or making desserts and is similar to tapioca. She thickened the gravy using sago instead of flour. Pro Tip 2/3Cultural Dish Sago is often found in Asian and Pacific Island dishes, where it's a staple carbohydrate. For the festival, they made a traditional sago dish. Pro Tip 3/3Pearl Form Sago is commonly sold as small, white opaque balls known as 'pearls', used in various dishes. She rinsed the sago pearls before cooking them.