Cover butterfly pea flowers and freshly picked viola petals with barely boiling water and let them steep, covered, for 6 to 12 hours. Strain out the spent petals.
Make the Syrup
Stir in an equal amount of sugar over very low heat until it dissolves, without letting it boil. Add lemon juice a drop at a time to shift the color from blue to purple upon serving. Refrigerate in a sealed jar for up to 2 weeks
To Serve
Drizzle it over ice cream or pancakes, stir it into custard, or use it to tint buttercream a pale purple.
Growing Guide
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