The game currently treats them as a groundcover/grass type plant that just grows for grazers to eat. IRL dandelions are are edible and there are enough of them to make them a viable forageable plant, while not being so abundant they'd break the game's balance.
Some stipulations could be that they can be harvested and would produce dandelion greens (from the leaves and flowers) and dandelion root. The greens could be eaten raw, with a small debuff (they taste bitter and are unpleasant to eat that way) or be cooked and eaten with no debuff. The dandelion root could be cooked into dandelion root tea which could have a similar effect to coffee, but toned down a bit from what coffee would do. In other words the tea would give a slight mood and energy boost when drunk.
Some stipulations could be that they can be harvested and would produce dandelion greens (from the leaves and flowers) and dandelion root. The greens could be eaten raw, with a small debuff (they taste bitter and are unpleasant to eat that way) or be cooked and eaten with no debuff. The dandelion root could be cooked into dandelion root tea which could have a similar effect to coffee, but toned down a bit from what coffee would do. In other words the tea would give a slight mood and energy boost when drunk.