In the work bowl of a food processor, combine flour, sugar, and salt. Pulse to combine. Add butter; pulse until mixture resembles coarse meal, about 10 seconds. With food processor running, slowly add strained ice water through spout; process until mixture comes together. Turn dough out onto a piece of plastic wrap, and flatten into a disk; wrap well. Refrigerate for at least 30 minutes, or until ready to use, up to 2 days.
Preheat oven to 350°. On a lightly floured surface, roll dough into a 12-inch circle. Place dough in a 9½-inch fluted tart pan with a collapsible bottom, and line dough with parchment paper. Place pie weights on top of parchment paper, and bake for 20 minutes. Remove from oven, and let cool for 1 hour. Remove pie weights and parchment paper, and remove tart shell from pan. Spoon Espresso Caramel into bottom of shell, and pour Chocolate Ganache over caramel. Tart can be stored, in an airtight container, for up to 3 days. Sprinkle with sea salt just before serving.
Recipe by Victoria at https://victoriamag.com/chocolate-salted-coffee-caramel-tart-recipe/