Use the best, freshest ingredients available to add extra flavor to this twist on classic strawberry-rhubarb pie. This recipe comes from Sam Mogannam and Dabney Gough's "Bi-Rite Market's Eat Good Food."
Make the crust: Place flour, butter, sugar, and salt in the bowl of an electric mixer. Transfer bowl to freezer for 20 minutes. Remove bowl from freezer and attach to mixer fitted with paddle attachment. Mix on low speed until mixture resembles a coarse meal, about 2 minutes.
In a small glass measuring cup, combine ice water and vinegar. With the mixer on low, slowly add just enough water mixture to flour mixture so that it comes together into shaggy clumps. If all the liquid is used and dough still doesn't hold together, add additional cold water, 1 teaspoon at a time. Take care not to overmix.
Turn dough out onto a large piece of plastic wrap; shape into a 5-inch disk and wrap. Transfer to refrigerator and chill for at least 30 minutes and up to 3 days.
On a lightly floured work surface, roll out dough into a 12 1/2-inch circle about 1/8-inch thick. Carefully transfer to a 9-inch pie plate. Tuck excess dough under edges to create a double thickness and a smooth edge; pinch every 2 inches to create a decorative edge. Transfer to refrigerator to chill for at least 20 minutes.
Make the filling: Preheat oven to 350 with a rack set in the center of oven.
Place all filling ingredients in a medium bowl; gently toss to combine. Set aside.
Make the topping: Place all topping ingredients in a medium bowl. Using a pastry blender or two table knives, cut mixture until the biggest pieces of butter are the size of small peas. Mixture will be dry.
Place filling in chilled pie shell and sprinkle with topping. Place pie plate on a large rimmed baking sheet and bake until crust is dark golden and filling is bubbling, about 1 hour 15 minutes. Transfer to a wire rack and let cool completely before serving.