Hey there!
The yellow bottles are meant to give you more time for your torch (wich is indicated by the clock on the top left of the screen). There's also a green wine bottle hidden in the level, wich helps you recover some sanity (the red spiral) at the cost of making you a bit tipsy, see if you can find it!
I'll update the description as soon as possible to include those tips.
Until then, cheers, and thanks for trying out Dimlands!