Brandy Cassis Cocktail

We enjoy a Kir (Cassis with white wine) and so were looking forward to this cocktail.  It was
disappointing, too much lemon juice - even though I cut the recipe amount in half- and it was hard to find the Cassis taste. Not a "keeper", a rarity lately.

The recipe (page no. 47 in the Bartender's Guide):

1 1/2 oz Brandy (E&J XO)
1 oz Lemon Juice (actually used 1/2 oz)
1 dash Créme de Cassis (Mathilde)

Shake with cracked ice and strain into cocktail glass.
Add a twist of lemon peel.

In hindsight, an oz or so of simple syrup may have salvaged the drink?

Salud!