1 Tbsp apple cider vinegar or distilled white vinegar
½ cup (114g) water
1 ¼ cups (150g) all-purpose flour
1 tsp granulated sugar
½ tsp kosher salt
½ cup (113g) unsalted European-style butter, cold and cubed
½ cup (70g) Soda Fountain Malted Milk Powder, divided
¼ cup graham flour (24g) or whole wheat flour (28g)
1 Tbsp tapioca starch
1 Tbsp granulated sugar
¼ tsp kosher salt
2 Tbsp (28g) unsalted butter, melted
1 large egg
1 Tbsp heavy cream
zest of 2 limes
5 large egg yolks, room temperature
1 14-oz can (396g) organic sweetened condensed milk
¾ cup (180g) lime juice, freshly squeezed (5–6 limes)
¼ tsp kosher salt
2 Tbsp Soda Fountain Malted Milk Powder
1 tsp ground cardamom
All-Butter Pie Dough:
Mix vinegar and water together, then add a few ice cubes. Store in fridge until ready to use.
In a large bowl, whisk together flour, sugar, and salt.
Add cold, cubed butter to flour mixture, tossing around gently to coat. With pastry blender in one hand, cut in butter while rotating bowl in quarter-turns with your other hand. Stop once the pieces of butter are roughly pea sized. (You’ll want to have some that are a little bigger and some that are a little smaller to maximize the delicious flakiness!)
Add ice cold water-vinegar mixture one tablespoon at a time, quickly mixing together with your hands. Continue adding water one tablespoon at a time until the dough comes together. The goal is for the dough to hold together when squeezed into a ball, but with a few dry bits still left in the bowl. NOTE: Do NOT add all of the water at once. You don’t want the dough to get so wet that it becomes sticky. You should only be adding 4–5 tablespoons of water total.
Wrap dough in cling film, then press into a patty shape about 1-inch thick. Place wrapped dough in fridge overnight. (You could refrigerate for only two hours if you’re in a hurry, but overnight is recommended.)
When you’re ready to create your crust, flour your work surface and rolling pin. Retrieve dough from fridge, place on your well-floured surface, and sprinkle top with a little bit of flour.
Begin gently rolling out the dough into a circle, making sure to pick up and rotate the dough every few rolls.
Once your dough is roughly a 12" circle and ⅛–¼ inch thick, gently place dough into your pie dish. Delicately press dough into bottom and up sides of dish.
Trim edges of dough to an even 1" overhang around pie dish.
Roll edges underneath themselves to create the crust rim. Crimp or style rim however you like.
Place pie crust in fridge for 30 minutes.
Heat oven to 400°F.
Retrieve crust from fridge. Slightly crumple a piece of parchment paper, then use to line crust, making sure parchment reaches all the corners of the dish.
Fill with pie weights or at least 1 lb of dry beans, then place in oven.
After 15 minutes, check to see if crust is dry. Don oven mitts and gently pull up one corner of the parchment paper. If it sticks, put pie back in oven and check again every 2 minutes until dry.
Once crust is dry, remove parchment and weights. Dock pie crust (prick bottom a few times with a fork).
Return crust to oven without parchment or weights and bake for an additional 5–10 minutes.
Allow crust to cool completely on a wire rack.
Heat oven to 325°F. Line baking sheet with parchment paper; set aside.
In a medium bowl, whisk ¼ cup (35g) malted milk powder together with graham flour, tapioca starch, sugar, and salt.
Add melted butter and mix together with a silicone spatula until small clusters are formed. Spread mixture onto baking sheet. Bake for 20 minutes.
Allow to cool completely on wire rack.
Mixture will have baked into one big piece. Break into small-ish pieces and place into bowl of food processor. Add remaining ¼ cup (35g) malted milk powder. Blitz until you have fine crumbs. Set aside.
Filling & Baking:
After your pie crust is cool and you’re ready to create your pie, whisk together egg and heavy cream. Brush onto crimped edges of pie crust.
In a large bowl, whisk together all ingredients for the lime filling until smooth. Pour into pie crust.
Bake 25–30 minutes until edges of filling look set and wee bubbles rise to the surface.
Transfer to wire rack and allow to cool somewhat. Once pie dish has cooled down enough to touch, place pie in fridge to fully set, roughly 1 hour.
Once pie has cooled completely and set, sprinkle graham dust on top. Slice and serve cold, ideally with homemade whipped cream. Enjoy within an hour or store in refrigerator.