1 cup water
1 cup sugar
1 tsp. peppermint extract
2 drops red food coloring

  • bring water and sugar to boil in a small saucepan
  • reduce to a simmer for 5 minutes
  • remove from heat and stir in peppermint extract and food coloring
  • let cool and store in glass jar with tight-fitting lid

source: https://www.allrecipes.com/recipe/245644/peppermint-coffee-syrup/