Things You'll Need
Mini-keg relief bung
1/3 cup corn sugar
1 cup boiling water
The popular 5L Heineken mini keg is most often thrown away after one use – the common belief is that the mini keg cannot be reused. Home brewers, however, can take advantage of this mini keg to create a convenient kegerator for prepared home brew. Easy to transport, you can then share your home brew with friends almost anywhere.
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Empty your Heineken mini keg completely and drill a hole (1 inch in diameter) in the top of the keg. Pour 5L of prepared home brew into the keg through the hole -- make sure to leave an inch of air between the home brew and the top of the mini keg for pressurization.
Prime your keg. Add 1/3 cup of corn sugar dissolved in boiling water to the home brew in the keg. Stop the hole with a mini-keg relief bung. This will keep any air from entering the keg and will prevent excessive pressure from accumulating while the home brew pressurizes.
Allow the keg to pressurize for three days in a cool location, away from sunlight. Before serving, chill the keg for several hours and then use the built-in plastic tap to pour your home brew.