dry goods, dry provisions
餱 centers on preserved food that can be stored and carried: dry goods or dry provisions, typically grain-based, meant for travel or long keeping.
餱 combines the food radical 飠 with 侯, which likely provides the sound. The character refers to dried food, especially grain, prepared for journeys.
The food radical 飠 beside 侯 suggests provisions for a marquis or noble on a journey: dried grain that won't spoil.
For コウ, imagine a traveler packing dry goods into a coat pocket: coat -> コウ, and the dried food keeps them going.