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.

View on OSRS Wiki

Redberry Pie shows an active flip setup with a margin of +58 gp and 1,905 trades over the last 24 hours.

At the buy limit of 15 every four hours, max profit per cycle is about 870 gp — high margin with healthy liquidity.