The aftertaste is the most important thing. That's when the resin starts pounding away at your cheeks until you cough (figuratively).

I've never tried it with regs, but, if you eat a few Nigella Sativa (Black Seed) every night, it not only boosts your immune system, but it really accentuates the Sativa when you smoke your Herb. I'm pretty sure they're legal and at Health Food Stores. I only eat a few a night.