In a mixing bowl, whisk together all-purpose flour, cocoa powder, baking soda, and salt. Set aside.
In the bowl of an electric stand mixer fitted with a paddle attachment, cream together unsalted butter, granulated sugar, and light brown sugar until combined.
Mix in egg. Add in liquid red food coloring, vanilla extract, and white vinegar. Mix until combined.
Add the flour mixture and mix just until combined. Mix in 3/4 cup white chocolate chips (set aside remaining 1/3 cup to use after baking).
Cover bowl and chill dough 1 to 2 hours until nearly firm.
Preheat oven to 350 degrees near the end of chilling.
Scoop dough out and shape into balls about 1 1/2 tbsp each (or 28g). Transfer to parchment paper-lined baking sheet spacing 2 inches apart.
Bake one sheet at a time until cookies appear set on the edges but slightly under-baked in the center, about 10 to 11 minutes.
Remove cookies from the oven and gently press some of the remaining white chocolate chips into tops.
Let cool on baking sheet for 5 minutes, then transfer to a wire rack to cool.
Store cookies in an airtight container. Keep a few bread slices or large flour tortillas in container with cookies to keep them soft.