During the process of heating the sap, in most cases, sugar is added to the liquid in an attempt to increase the quantity of jaggery.

Source: https://indianexpress.com/article/cities/kolkata/nolen-gur-bengals-beloved-seasonal-food-stares-at-a-bitter-future-8505171/

Elders of the house they visit, greet them with enthusiasm, and offer them gifts like gajak, crystal sugar, jaggery, peanuts and popcorn, in abundance.

Source: https://www.dailyexcelsior.com/lohri-a-fading-folk-festival/

Healthy bites: Balls of horsegram, ragi and rice, sometimes sweetened with jaggery, make up a meal.

Source: https://www.thehindu.com/photos/in-frames-elephant-tales/article67395387.ece