In a cocktail shaker, mix the vodka, gin, and dwellberries. Click on the shaker when you have all of these ingredients in your inventory. Click on the shaker again to pour it into a cocktail glass, which gives 30 Cooking experience. Click on the "mixed dragon" to add the pineapple chunks and cream. Lastly, heat it on a range to complete the drink, giving 130 Cooking experience.