In a large mixing bowl, combine the warm water and sourdough starter. Use a whisk to dissolve the sourdough starter into the water. Add the raw honey, and olive oil, then whisk to combine.
Generously drizzle a rimmed baking sheet with olive oil. Pour the risen focaccia dough out onto the prepared baking sheet. Drizzle the surface of the dough with a bit more olive oil, and use your finger tips to stretch the dough out towards the corners of the pan, and dimple the dough well as you do that.
If you prefer a thinner focaccia, stretch the dough out further. For a thicker focaccia, stretch it out less.
Drizzle the top with a bit more olive oil, and sprinkle with flaky sea salt.
Bake the sourdough focaccia for 30-35 minutes until the top is golden brown and the edges are crispy. Use scissors to cut big slices. Store leftover focaccia in an airtight container in the fridge for up to 3 days. Enjoy!