What is LSA powder USED IN FOOD?

LSA stands for Linseed (flaxseed), Sunflower, Almond.

It is a nutritive that is added too or replaces cereal for breakfast. It was made popular by the The Liver Cleanse Diet, that was created in Australia, which is why it is an "L" (for linseed) rather than "F" (for flax).

It is usually purchased ground (3 part linseed, 2 part sunflower, 1 part almond), although in Australian supermarkets you can buy a less processed version.