People / Process / Trust
Make or otherwise procure a tart crust and par-bake as instructed (you will be returning it to the oven for 10 minutes at the end.) Shortbread is good.
Meanwhile, add:
...to a small saucepan. Bring slowly to a boil - do not allow sugars to scorch - and simmer berries til they split and soften, about 10 minutes.
Cool til no longer steaming. Meanwhile, beat 2 eggs + 2 yolks til combined.
Immersion blend berries til uniform in color. You can strain it for clarity but I don't bother. Whisk in a stick of butter and cool til no longer steaming (cold butter will help drop the temperature of the curd faster).
Once stirring the curd releases no steam, stream the eggs into it and whisk to combine.
Return to heat and slowly simmer. Remaining liquids will steam off. Stir continuously but lazily (trying not to incorporate too much air) until just bubbling, 10 minutes.
cool til no longer steaming again. Pour into pie crust.
Bake at 350 for 10 minutes, rotating halfway through, to set custard. Cool on wire rack.