50ml Lamb�s Navy Rum
10ml sugar cane syrup
10ml grenadine syrup
25ml fresh lime juice
4 raspberries 2 blackberries
2 dash cranberry bitters

Glass: bamboo glass
Garnish: mint sprig, 1 raspberry and 1 blackberry on a prisma stick
Method:

muddle 4 raspberries and 2 blackberries
with the syrups inside the glass. Add the lime juice, the bitters
and the rum, fill the glass half way with crushed ice and swizzle.
Top the glass with more ice, swizzle a bit more and garnish.