To achieve a concentration comparable to a standard hot brew when making sun tea, what ratio adjustment is recommended regarding the amount of tea used?

Use approximately one-third more tea by weight than for a standard hot brew.

Since sun tea brewing operates at lower temperatures, the extraction efficiency for dissolving flavor compounds is inherently less vigorous than the process driven by boiling water. To counteract this slower, less aggressive migration of solids from the leaf to the water over several hours, the suggested optimization strategy involves increasing the concentration of raw material. Specifically, it is advisable to incorporate roughly one-third more tea by weight than one would typically measure out for an equivalent volume prepared using a quick hot steep. This higher leaf density helps ensure that enough desirable compounds are pulled into the water before the ambient temperature limits further extraction, thus helping to match the flavor intensity that might otherwise fall short.