Gemma Tremor is gorgeous very strong cocktail at 1.9 standard drinks. Shaken with 30ml rum dark and 30ml vodka with 10ml grapefruit juice as well as 20ml pineapple pulp including 100ml ice and had with salad dishes. Just place pulp into bottom of glass then place ice into mixing glass and add ingredients to mixing glass. Stir well until mixed and comestible and served in a saucer glass cold.