Directions
Step 1
Make the ice cream: In a small bowl, whisk collectively the sugar, dextrose, malted milk powder, and guar gum (if utilizing). To a medium pot, add the milk and heavy cream, then whisk within the sugar combination. Carry to a rolling boil over medium-high warmth, then flip down the warmth and simmer, stirring sometimes, till the sugar has dissolved and the combination has thickened, about 5 minutes. Take away from the warmth, then pour into a big heatproof bowl, cowl, and refrigerate or freeze till cool to the contact, about 2 hours within the fridge, or 20 minutes within the freezer.
Step 2
Uncover the ice cream base, sift within the matcha powder, and use an immersion blender to include. Alternatively, add the matcha to a small bowl, whisk in ½ cup of the ice cream base to make a easy paste, then whisk the matcha paste again into the bowl of ice cream base. (If any clumps stay, pressure the liquid via a fantastic mesh sieve.) Cowl and return the liquid to the fridge to relaxation for 8–24 hours.
Step 3
In the meantime, make the cookies: In a big bowl, whisk collectively the butter, brown sugar, egg, vanilla, ginger, salt, cardamom, and cinnamon till easy. In a medium bowl, whisk collectively the flour and baking soda, then utilizing a silicone spatula, fold the flour combination into the butter-and-egg combination. Refrigerate till the dough is cool however nonetheless comfortable and pliable, not less than 20 minutes or as much as 12 hours. (If refrigerating for greater than an hour, cowl the bowl.)
Step 4
Place racks within the prime and backside thirds of the oven and preheat to 350°F. Scoop the dough into 28 two-tablespoon parts. Stagger the parts on two parchment-lined baking sheets, leaving not less than 2 inches between them. (If the cookies don’t all match on two sheets, refrigerate the remaining dough and bake in batches.)
Step 5
Bake, rotating and swapping the highest and backside pans midway via cooking, till mild golden brown however barely underbaked within the heart, 7–8 minutes. Put aside to chill fully on the baking sheets; the cookies will flatten and proceed cooking as they cool. (If making forward of time, switch the cooled cookies to an hermetic container and retailer at room temperature for as much as 3 days.)
Step 6
Switch the matcha liquid to an ice cream machine and churn based on the producer’s directions till thick, frozen, and not moist in look, about 25 minutes. Add the salt and proceed churning to include, about 3 minutes.
Step 7
Assemble the ice cream sandwiches: Line a baking sheet or massive platter with parchment paper and place 14 of the cookies on it, bottoms up. High every with roughly ¼ cup of ice cream, then prime with the remaining cookies, urgent down barely. (In case you like, easy the edges with the sting of an offset spatula.) Freeze till agency, not less than 1 hour. Serve straight from the freezer. (Wrapped tightly in plastic, the sandwiches preserve within the freezer for as much as 2 weeks.)
