The Chelsea Collins is a twist on the classic Tom Collins cocktail. It is made with gin, lemon juice, simple syrup, and soda water. The addition of muddled fresh berries, such as raspberries or blackberries, gives the drink a fruity and slightly sweet flavor. The Chelsea Collins is a refreshing and easy-to-drink cocktail that is perfect for any occasion. It can be found at many bars and restaurants in Chelsea, where it is a popular choice among gin lovers.