Redberry pie

Redberry Pie is a free-to-play item on the OSRS Grand Exchange in the food category.

In-game examine text: "Looks tasty."

It has a Grand Exchange buy limit of 15 every four hours, a high alchemy value of 7 gp, and item ID 2325.

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Redberry Pie shows an active flip setup with a margin of +38 gp and 4,148 trades over the last 24 hours.

At the buy limit of 15 every four hours, max profit per cycle is about 570 gp — high margin with healthy liquidity.