@previous (A)
Eat a lot of beetroot. That'll give you a good amount of nitrates in your feces; speeds up decomposition.
Take a B-vitamin complex. That'll give your urine a very bright yellow color, but those byproducts help.
Take a healthy amount of your shit, and force it into a glass bottle. Top up with urine. Ideally, your first pee of the day (the highest concentration of urea) after an 8-hour sleep. Cap the bottle (you can buy bottle cappers on Amazon for cheap; it has to be airtight, so no tin foil) for an intense high. Alternatively, you can use a balloon, but don't buy cheap balloons as they may degrade in direct sunlight over hours/days. The balloon method allows for a slower high as you control the release of gases into your lungs.
Leave the mixture in direct sunlight. When the sun goes down, bring it inside and store in a cool, dry place. Repeat the process for 3 to 5 days.
You now have premium Jenkem. Report back.