Crush the cookies: Place the cookies in a zip-top bag and crush with a rolling pin until you have fine crumbs with a few small bits. Aim for a mix, not dust.
Warm the base: In a small saucepan, add the heavy cream, milk, and sweetened condensed milk.
Warm over low heat, stirring, until everything is smooth and just steaming. Do not boil.
Add flavor: Stir in the vanilla, almond extract (if using), and a pinch of salt. Taste and adjust sweetness with a little more condensed milk or sugar if you prefer.
Fold in cookies: Remove from heat.
Stir in the crushed cookies. Let the mixture sit 5–10 minutes to infuse that classic cookies-and-cream flavor.
Strain or not—your call: For a smooth creamer, pour through a fine-mesh strainer into a jar. For a rustic version with cookie flecks, skip the strainer.
Chill: Transfer to an airtight bottle or jar and refrigerate at least 2 hours.
It thickens slightly as it cools.
Serve: Shake well before each use. Start with 1–2 tablespoons in hot or iced coffee and adjust to taste.