Puree the 1 1/4 cups of strawberries using a blender, food processor, or masher. If using frozen strawberries, thaw them slightly or use a high-speed blender.

In a small pot, combine the strawberry puree, sugar, and one-third of the cut strawberry pieces. Heat until it boils. Let it boil for 1 minute, then turn off the heat and allow it to cool on the counter or chill in the refrigerator.

(Note: You can skip the boiling step, but for best results, consume the same day. The puree will be thinner and more watery but will have a fresher strawberry flavor as it's not heated.)

Take two 16-ounce glasses. Add half of the cooled strawberry puree and half of the remaining cut strawberry pieces into each glass. Swirl it around the glass to create a pattern.

Pour half of your milk of choice into each glass and serve immediately. Optional: top with whipped cream.