I used an 11-ounce old-fashioned glass. You need a glass slightly larger than the liquid measures because it will bubble and fizz.
Add the crushed peppermint to a saucer. Pour syrup in another saucer then take your glass and roll the rim in the syrup. Immediately press the glass rim into the crushed peppermint coating the entire rim with peppermint.
Carefully scoop peppermint ice cream into the glass.
Slowly pour champagne over the ice cream. Serve immediately.