Chaashnies are sometimes added prior to serving and is used to taste by the dish, for example, in a sandwich made with ketchup, mustard, mayonnaise, Sriracha, or hot sauce.

[citation needed] It goes without saying that choosing a good chaashni will make the food or salad tastier and more delicious.

Sweets that need sugar to set use two thread syrup, which is obtained by boiling and stirring for a longer time.

According to Persian dictionaries, a chaashni is a combination of honey with vinegar or lemon juice to increase the food delicacy.

“A Concise Pahlavi Dictionary by D. N. Mackenzie” refers to č’šnyg as meaning taste in Middle Persian.

According to Iranica, “With Aristotle it has been observed that it is through the faculties of sight (wēnišn), touch (pahrmānišn), taste (čāšišn), smell (bōyišn, hanbōyišn), hearing (āšnawišn) that, in association with the organs of the body, principally the tongue (mādayān uzwān), man conveys his thoughts (mēnišn) in the form of language (Dēnkard, p. 48, tr., p. 66).” “Ka dārūg ē ō kāmēd xwardan ud ka dārūg az ān ī pad xwarišn mehmānīh pad drōn frāz nihišn u-š čāšīng pēš ēn az dārūg kunišn.

Saffron was used by ancient Persian as a brilliant yellow dye, perfume, and a medicine and they mixed it into hot teas as a curative for bouts of melancholy.