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Grapefruit Negroni
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5 from 8 votes

Grapefruit Rosemary Syrup

Try this simple to make Grapefruit Rosemary syrup out in cocktails. It's great in a Negroni.  The rosemary adds just a tiny hint of herbal flavour to the syrup and can be left out entirely, depending on your preference.
Prep Time5 mins
Cook Time0 mins
infuse30 mins
Total Time35 mins
Course: Sauce/ Condiment
Cuisine: Worldwide
Keyword: grapefruit, rosemary, simple syrup, syrup
Servings: 10
Author: Jane Saunders | LittleSugarSnaps


  • 100ml / Red or pink grapefruit juice (approx juice of 1 fruit)
  • 75 g/ 1/3 cup White sugar
  • 2 strips Grapefruit peel
  • 1 Large sprig fresh rosemary (optional)


  • Put all ingredients into a small saucepan and heat gently to dissolve the sugar then bring to boiling point
  • Remove from the heat and leave to infuse for 30 minutes
  • Strain through a fine-meshed sieve, decant into a bottle and store in the fridge for up to 1 month