Whisk your all-purpose flour, salt, and granulated sugar in a large bowl. Use your fingers to rub the cold unsalted butter into the flour until it looks like coarse crumbs. Olivia loves "pinching" the butter, just make sure those little hands stay cool so the butter doesn't melt!
Stir in your apple cider vinegar and ice water until the dough just holds together. Shape it into a disk, wrap it up tight, and let it nap in the fridge for at least an hour. This is a great time to read a story together while we wait!
Roll the dough into a 12-inch circle and fit it into your pie pan. Line with parchment, fill with pie weights, and bake at 375°F for 20 minutes. Remove weights and bake 10 more minutes until golden. Let it cool while we prep the "liquid gold."
Lower the oven to 325°F. In your bowl, whisk the melted unsalted butter, wildflower honey, granulated sugar, light brown sugar, heavy cream, and apple cider vinegar. It smells like a dream at this stage!
In a small bowl, beat your eggs and egg yolks. Slowly, and I mean slowly!, whisk a little of the honey mixture into the eggs. Olivia is my "slow pourer" here; it teaches her patience and keeps our custard from turning into scrambled eggs.
Pour the filling into the crust and bake for 50-60 minutes. You’re looking for a "Jell-O jiggle" in the center. Once it’s out, immediately sprinkle that beautiful flaky sea salt on top so it sticks to the warm custard.