Strawberry Chocolate Galette

INGREDIENTS

For the pastry::

1/2 cup

unbleached all-purpose flour

1/2 cup

whole wheat pastry flour

2 tbsp

sugar

1/4 tsp

kosher salt

1 stick

very cold unsalted butter, diced

3 tbsp

ice water

raw sugar for sprinkling

egg

1 tsp

water

For the ganache::

3 oz

dark chocolate

1/4 cup

heavy cream

For the filling::

1 qt

strawberries, hulled and sliced

squeeze of fresh lemon juice

3 tbsp

sugar, more or less depending on sweetness of strawberries

1 1/2 tbsp

cornstarch