Bitterness being "just paper" is usually what the dealer tells you when he wants to sell you some research chemicals.

could be tasting the salt component (tartaric, maleic acid, etc), lsd is usuallly never distributed to blotter without being complexed with a dicarboxylic acid to preserve it. those acids are usually sour, but at that low of a concentraition, they may have a different characteristic.

One morning, a couple of weeks later, I took a small, double-ended vial to Burt in his analytical lab down the hall, and asked him to please weigh out for me a small quantity of material into a separate container. The actual amount was not important, a few milligrams; what was important was that I wanted the weight accurate to four places. He disappeared for a few minutes, then reappeared with the vial I had given him and also a weighing container holding a small amount of an almost white powder.

"Here is 3.032 milligrams, exactly," he said, adding, "And it's slightly bitter."

"How do you know?" asked I.

"After I weighed out the psilocybin, there was a trace of dust on the spatula, so I licked it off. Slightly bitter."

I asked him, "Did you read the label carefully?"

"It's the vial of psilocybin you just received, isn't it?" he asked, looking at the funny-shaped tube still in his hand. He read the label. It said Lysergide. He said, "Oh."

One periodically hears some lecturer holding forth on the subject of psychedelic drugs, and you may hear him give voice to that old rubric that LSD is an odorless, colorless and tasteless drug. Don't believe it. Odorless yes, and colorless when completely pure, yes, but tasteless, no. It is slightly bitter.

I took a bunch of photos about various blotters at Boom 2014 (see below).
Please help to identify these blotters by name and/or subjective experience! Drug testing results from Check-in are marked in parentheses. They will soon provide statistics on this year's drug testing.