What at first appears to be a variation on the classic Sidecar, instead turns out to be an utter failure. If you look at the ratios, you will quickly conclude that this drink is damned sour. After making it to spec, tasting and wincing, I then doubled the amount of cassis. Still no good. The problem is that creme de cassis is a much lower proof than a top shelf triple sec or curacao. Thus, you really need to double the cassis ratio to lemon juice. This makes for a huge cocktail. So, here is my suggestion: 3 parts brandy, 2 parts creme de cassis, 1 part lemon juice. See what you think. It’s still just average in my opinion. Which is a shame, because I love a good cassis.
1oz lemon juice
0.5oz creme de cassis
Garnish: lemon twist
Shake with ice and strain into chilled cocktail glass. Add lemon twist.