Amaretto sour

Having recently rediscovered this cocktail, one of my favourite drinks back in college, I wanted to recreate it at home as Amaretto is a liqueur I almost always have in the house. All this consists of is amaretto and lemon juice. I have to admit, I didn't exactly follow Nigella's measurements exactly and came up with a drink that was probably too strong on the sour and even stronger on the amaretto, but I liked the sharp contrast of sweet and sour and will be making this again. Now I need to find some maraschino cherries to complete the recipe properly.