Rhubarb Vodka Cocktails to make at home are amazing. You can easily make homemade rhubarb vodka or rhubarb liqueur. Just steep fresh rhubarb in Vodka, or even gin and leave it for a few days to a week. then you can add some sugar to adjust to taste and you're all good to go. Or you can buy a decent brand. There are 3 that really good. Obviously JJ Whitley Rhubarb Vodka. Chase Rhubarb vodka and also Absolut Juice Rhubarb.
50ml JJ Whitley Rhubarb Vodka - https://stblive.uk/jjrhubarb
15ml Licor 43 - https://stblive.uk/licor43
10ml Lime Juice
25ml Passion Fruit Purée - https://stblive.uk/odkpuree
50ml Apple Juice
Ms Betters Bitters Mt Fuji Bitters - https://stblive.uk/msbettersbitters
Dehydrated Lemon to Garnish