Halfling's Grass
This is aleardy implemented in-game, but this herb doesn't have any special properties. you can't make it into a potion, and nobody knows It's effects. It's practiclly a drug, that is stronger in water.
So here is how I think halfling's grass should be!
The grass is indeed chewable, but to get it's full effects you need to squeeze it into a hot food/drink and consume it.
Once consumed, The user will feel a tad better. it's mostly used as a medcine for headaches, coughs, and other lesser pains.
After a few hours, the effects begin fading out, leaving the user's mind somewhat clouded. The herb is very addictive, But due to It's bitter flavour, is easily put aside for other habits.
If the consumer of the herb is a magic user of any sort (Excluding dark arts), He'd find it harder to connect to his source of power. It doesn't matter if he gathers power from a deity or from the void. The effect builds up on and on, until even a Master would be close to fainting if one attempts to connect to his power source. This effect doesn't build up too quickly, (Unless you mass-consume the herb), And is fixable only by waiting. Usually, It takes about 3 days for the effect to fade, if it Isn't too strong.
That is it for this lore submissions! please leave feedback in the comments!