unrefined sake or shoyu
醪 centers on a cloudy, unrefined fermented liquid: the thick mash stage of sake or soy sauce before pressing and filtering.
醪 combines 酉 (sake jar, fermentation vessel) with 翏, which likely contributes the sound and may suggest a thick, cloudy quality. The character refers to unrefined sake or soy sauce mash.
The sake jar 酉 on the left holds a cloudy, unstrained brew. The right side 翏 looks like feathers floating in liquid, like the solids suspended in unrefined sake mash.
For ロウ, imagine a row of jars filled with thick, unrefined sake: row -> ロウ, and each jar is full of cloudy mash.