Ah, all the technical process questions!
1. Take chipped 99cent supermarket ceramic mug.
2. Add 2 heaped teaspoons of Nescafé Blend 43 granules to 1/2 cup boiling Aussie rainwater.
3. Dozen stirs counter-clockwise using slightly tarnished teaspoon.
4. Leave to cool while doing yard work, then pour into small Zip-Lok bag.
5. Add one $8 repro check valve from John's Classic Cars and seal bag.
6. Check until happy with color and remove.
OR
6a. Wife asks what is that mess in the bag on the counter? and you remember the experiment, remove valve and wish you'd caught it sooner.