Add the chocolate, heavy cream and beer to the top of a double boiler set over gently simmering water.

Stir until just before all of the chocolate has melted. Remove from heat, continue to stir until the chocolate has melted.

Allow the chocolate to cool until set (add to the refrigerator to speed up setting).

Add the pretzels to a shallow bowl.

Once the chocolate has set use a melon baller to pull out a ball about the size of a large marble. Roll in your hands until even and round.

Add the chocolate ball to the pretzels, roll until well coated. Add to a sheet of wax paper. Repeat for the remaining chocolate.

Refrigerate until ready to serve.