Explain how the rosetta wiggle creates petals through close height, steady flow, and controlled lateral motion.
Wiggle less, feed more. A rosetta is built by combining close height, steady flow, and a small side-to-side rhythm. The wiggle does not replace the pour fundamentals. It only works when foam is already riding on the surface and the stream has enough volume to stack petals. The most common mistake is over-movement. A big forearm shake sends the stream across the cup, breaks symmetry, and changes flow rate. A small wrist rhythm keeps the stream near the same contact zone while the pitcher slowly travels backward. That lets each wave of foam push into the previous wave. The finish…
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