In a large bowl, combine 400ml water (200ml boiling water and 200ml cold water), 7g maple syrup, 7g salt, 7g instant yeast, 1 tablespoon olive oil, and 500g bread flour. Use a dough hook in your mixer machine or a fork, stirring in a clockwise manner until a rough dough ball has formed. Cover with a tea towel and set aside in the oven with the light turned on but no heat, or in a warm dry place for 2 hours.
After your dough has risen (doubled in size), get out your butter from the freezer and grate.
Add half the grated butter into the dough and gently fold the dough 12 times, turning the bowl every time you fold. Then add the other half of the grated butter and repeat the folds. The butter should still be hard, but well incorporated in the dough.
Get yourself a baking dish or metal tray and drizzle with olive oil. Add in the dough and spread to the sides of the tray. Cover with the tea towel and leave to rest for another 30 minutes in the oven (light on, no heat) or in a warm dry place.
Your dough should have risen again. Preheat your oven to 200C fan / 425F. Wet your fingers and then dimple the dough to create little bubbles and indentations. Bake in the oven for 30 minutes.
Once your focaccia is golden brown, remove from the oven and leave to cool slightly. Then remove from the dish and enjoy with butter, jam, Nutella, or whatever you fancy!