Plum Galette Recipe

Ingredients

• 1 1/4 cup (160g) all-purpose flour
• 1 teaspoon sugar
• 1/2 teaspoon salt
• 1 1/4 sticks (137g) unsalted butter, cut into cubes
• 1/4 cup (57 ml) sour cream
• 1 egg, beaten, for egg wash (optional)
• 1 teaspoon cream for egg wash (optional)
• Coarse sugar for sprinkling (optional)
• 6 to 8 tart plums and/or pluots, pitted and sliced (about 570g)
• 1/3 cup (70 g) sugar
• 1/8 teaspoon cinnamon
• 1 teaspoon lemon juice
• 1 teaspoon orange (or lemon) zest
• 1 teaspoon quick tapioca, or 1 tablespoon of flour (for thickening)