A merenguito or merengue is just a mixture of beaten egg whites whipped with sugar.
Many cooks use cream of tartar to help stiffen the mixture.
We've had good luck without it. One uses sugar and no cream of tartar. The other uses cream of tartar and a hot sugar syrup. Warm Method 4 large egg whites, room temperature Pinch of Salt 1 cup sugar Baking parchment, sprayed lightly with PAM With an electric mixer, beat egg whites in a large bowl until they reach the soft-peak stage. It is important not to over beat the whites at this stage.