1. Using pulverized carbon, which is sludge in the alcohol
Pulverized activated carbon
1. Mix 4 grams pulverized carbon per liter of alcohol.
2. Pour straight into the alcohol.
3. Let it stand at least 24 hours.
NOTE: During this time, the mixture should be shaken at least four times.
4. Let the mixture clear for 24 hours or more, during which time the sediment sinks to the bottom and the alcohol clears.
5. Now siphon off the alcohol: the sediment is filtered.