MIX: Combine water, honey, yeast, in a large bowl and let sit for 10 minutes until foamy. Stir in flour and kosher salt. Add ¼ cup of olive oil and combine with a dough whisk or rubber spatula. Rub the surface of a large bowl with a teaspoon of oil. Place the dough in the bowl, cover and refrigerate for 12-18 hours.
PROOF: Remove dough from the fridge 3 hours before baking. Drizzle 2 tablespoons of oil on an 18x13 baking sheet and spread it out using your hands (see notes.) Dump the dough out onto the baking sheet. With oily hands, stretch the dough using your fingertips towards the edges of the pan. Stop when the dough shrinks back, cover, and try again after another 30 minutes. Allow the dough to rest for a total of 3 hours (your 30-minute stretching intervals count towards the total 3-hour time.)
PREHEAT: When there are 45 minutes remaining, position a rack in the center of the oven and preheat the oven to 425ºF. Drizzle the top with another 2 tablespoons of olive oil, rub some of your fingers too, and dimple the dough using your fingertips, pressing down on the dough to the bottom of the pan but making sure you don’t rip the dough. At this point, you can top with olives, fresh herbs, or just the flaked sea salt.
BAKE: for 25-30 minutes or until golden. You can broil the focaccia for a minute to give it a little more color if you’d like (see notes.) Let cool for a few minutes before slicing.