Yeah, I heard they just go straight through you without really doing anything unless they're ground first. They're a real pain to grind with a pestle & mortar like you say though - you can buy mini grinders that should do the job though if you don't want to buy a food processor or something.Am I correct in thinking that you should grind them up to get the most nutrients from them, and that if they are eaten whole they are only really good for fibre? Ive been grinding mine but i don't have an electric grinder so it's really bothersome doing it in a pestle and morter. If they are best eaten grinded I think i'll invest in an electric grinder.
You can buy 'Nutrasprout' which is sprouted and powdered flax, but I think it tastes bogging since it's flavoured. I'm going to try sprouting them myself in a jar as this is meant to at least triple their nutrient value.