Lavender can become strong quickly—start with 1.0 teaspoon and adjust next time to taste. If you prefer a brighter citrus note, add 0.5 teaspoon finely grated lemon zest to the strained custard. For a no-churn option, fold the cooled, strained tea-lavender milk into 2.0 cups whipped heavy cream and 1.0 can sweetened condensed milk, then freeze.