In a large bowl, combine yeast and warm water. Let sit for 5 - 10 minutes. Mixture will become foamy.

Add in a 1/2 cup of olive oil, sugar and flour.

Using a dough hook attachment, combine and knead for 5 minutes. If dough is still sticking to the sides, add a little flour until the dough is smooth and doesn't stick. If mixing by hand, stir ingredients until dough comes together and then turn out onto a lightly floured surface and knead for 5 minutes.

Transfer dough to a large greased bowl and cover with plastic wrap.

Let dough rise for 1 hour. Dough should double in size.

Pour remaining 1/4 cup of olive oil onto a 12x17 sheet pan.

Turn dough out and press evenly into the pan, trying to get to the edges.

Cover with a kitchen towel and let rise for 1 hour.

Preheat oven to 450 degrees and place an oven rack in the lower half of the oven.

Remove kitchen towel and gently dimple the top of the focaccia with your fingers and sprinkle with sea salt.

Bake for 15 minutes.

Slice and enjoy!