Method: Scrape off all fuzz. Take 4-10 seeds minimum, any more or less is kind of pointless, unless you have extremely variant potentcy. I have heard that extremely high doses of these seeds can cause some kind of internal bleeding, there are a few nasty trip reports on erowid, who knows?
Grind up seeds, to a fine powder. Place in 16 oz of water, with 2 tablespoons citric acid (lime juice), shake, and let sit for a day or two in a dry cool dark spot.
Remember to shake it as often as possible.
After 24-48 hours has passed (I let mine sit for a week)
Take a coffee filter or a clean tshirt and filter the seed powder out.
You now have a pretty decent extraction of LSA, without some of the other chemicals that cause nausea or other negativities.
Drink on an empty stomach, take 1 sea-sickness pill or ginger to help with any leftover nausea, strap in, enjoy.
Edit: I just finished making a new batch, and I always forget how much I LOATHE the smell of these things. Also, you might notice a pain in your hands while your cleaning off the fuzz, I assume this is from any cyanide? based chemicals entering through your skin, don't worry, it goes away within a half hour.