Peel peaches with a paring knife, remove pit, and puree in a food processor or blender (I use my mini cuisinart) until smooth.

Make curd. Combine all ingredients except butter in a heat proof bowl and whisk constantly over a pot of simmering water, 20-30 minutes, until thickened & it coats back of wooden spoon. Remove from heat and whisk in butter one tablespoon at a time. Strain curd through a mesh sieve (I skipped this step and didn’t mind, but straining will result in a finer texture) and chill. As noted abovie, it will thicken further as it chills.

Make whipped cream while the curd chills. Combine sugar and basil leaves in the bowl of a mini food processor and grind until completely combined to make “basil sugar”. This can also be accomplished with a mortar and pestle. Pour cream into the bowl of an electric mixer fitted with the whisk attachment. Whisk until soft peaks begin to form and slowly add basil sugar with the mixer running until the sugar is dissolved and you have stiff peaks.

Fill cooled pastry shells with the curd and either pipe or spoon the basil whipped cream on top. Garnish with edible flowers and basil leaves. Serve at room temperature or chilled.