Why is this stronger than regular cold brew?
Frothy Coffee Concentrate is usually mixed 1 part concentrate to 4 parts water or milk. Here it goes 1 to 1 with milk, which is what makes it a piccolo: a small drink with a lot of coffee in it.
What are soft peaks?
The cream has thickened enough to hold a shape, but the tip flops over when you lift the spoon out. Stop shaking there. Stiffer cream sits on the drink like a lid instead of mixing in as you sip.
Why mix it in a separate glass first?
Syrup poured straight onto ice gets cold and thick before it can mix, and it ends up at the bottom of the glass. Stirring the concentrate, milk, and syrup together first means every sip tastes the same.