1-First Step: Prepare the strawberries Start by cleaning the strawberries well. Remove the stems, then slice them so they blend easily. If you are using fresh berries, this step takes only a few minutes. If you are using frozen strawberries, let them thaw first or drain them well after thawing so the mousse does not turn watery.

2-Second Step: Make the strawberry puree Add the sliced strawberries and the 1/2 cup granulated sugar to a blender or food processor. Puree until smooth. The sugar helps draw out the berry juices and gives the mousse a nice, sweet base. If you like a little texture, you can blend only until mostly smooth, but a silky puree works best for this dessert.

3-Third Step: Reserve part of the puree Measure out 1/2 cup of the strawberry puree and set it aside. This reserved puree will form a bright layer in the serving glasses, which looks beautiful and adds a burst of fresh fruit flavor at the bottom.

4-Fourth Step: Whip the cream Pour the cold cream into a cold bowl. Beat it until stiff peaks form. A cold bowl and cold cream help the cream whip faster and hold its shape better. Stop mixing as soon as the cream stands up firmly, since overbeating can make it grainy.

5-Fifth Step: Fold the puree into the whipped cream Gently fold the remaining strawberry puree into the whipped cream. Use a spatula and move slowly so you keep the airy texture. Folding is better than stirring because it keeps the mousse light and fluffy. Keep going until the color looks even and the mixture is smooth.

6-Sixth Step: Build the dessert glasses Divide the reserved 1/2 cup puree among 4 small or medium glasses. Then spoon the strawberry mousse mixture on top of the puree in each glass. Try to keep the layers neat, since the contrast between the bright puree and pale pink mousse makes the dessert look extra inviting.

7-Final Step: Chill and serve Refrigerate the glasses for at least 1 hour. This chilling time lets the mousse set and gives the flavor time to come together. For the best texture, you can chill it overnight if you are planning ahead. Right before serving, top each glass with fresh sliced strawberries.