In a small bowl, mix ground linseed with water and let it sit for a minute or two until it becomes a gel. (talesofakitchen.com)
I found a few options (mashing a banana, using baking powder and flour and water) but chose the one that I thought nutritiously savvy and most intriguing: mixing ground linseeds with water. (sisterbakers.com)
Hey Linda, LSA is a mixture of ground linseeds, sunflower seeds and almonds. (conscious-foodie.com)