Foolproof Swirled Strawberry Meringue Cookies Stable Swiss Method

Instructions:

1. Preheat your oven to 200°F (95°C). Line two baking sheets with parchment paper.
2. Combine the egg whites, caster sugar, cream of tartar, and salt in the heatproof bowl of your stand mixer. Place the bowl over a saucepan of simmering water (a bain-marie), ensuring the water does not touch the bottom of the bowl.
3. Whisk constantly until the sugar is completely dissolved. The mixture should feel perfectly smooth when rubbed between your fingers.
4. Continue whisking gently until the mixture reaches 160°F (71°C) on an instant-read thermometer. This pasteurization step is key to a safe and stable Swiss meringue.
5. Immediately transfer the bowl to the stand mixer fitted with the whisk attachment. Whip on medium-high speed until the meringue is incredibly thick, glossy, and holds stiff peaks (the marshmallow stage). The bowl should feel cool to the touch. This typically takes 8–12 minutes.
6. Reduce the mixer speed to low. Drizzle in the vanilla extract, then carefully sift in the freeze-dried strawberry powder. Mix only until just combined—do not overmix.
7. Fit a piping bag with a large star tip. Using a small spatula, paint three to four vertical stripes of the strawberry jam/conserve up the inside walls of the piping bag.
8. Gently spoon the finished meringue mixture into the prepared piping bag. Pipe the mixture onto the lined baking sheets, creating uniform rosettes or kisses about 1.5 inches wide, leaving about 1 inch of space between them.
9. Place the trays into the preheated oven. Bake for 90 minutes. Do not open the oven door during this time. The meringues should not brown.
10. After 90 minutes, turn the oven completely off. Prop the oven door slightly ajar and leave the meringues inside to dry out completely for a minimum of 60 minutes, or until they are completely cool and peel easily from the parchment paper.
11. Once completely cool and crisp, serve immediately or store in an airtight container.