Chia seeds provide protein, fiber, omega-3 fatty acids, are flavorless and have the ability to thicken when stirred/blended with a liquid (in a dressing/sauce, to make a chia “egg”, or in a smoothie). I use them in many recipes They are sold in bulk and bagged and come in black and white varieties (no difference in nutrition – just color). They are very shelf-stable and don’t need to be refrigerated or frozen. They can be used whole or ground, unlike flax, which must be ground (and kept cool) to protect the omega-3 fatty acids and provide an opportunity for your body to access them.