How to Make Gajar ka Halwa Without Burning
Use a broad, heavy-bottomed pan
A sturdy base distributes heat more evenly and gives milk solids less opportunity to scorch at one hot spot. A broad pan also increases evaporation without requiring extreme burner heat.
Cook carrots and milk with patience
Milk reduction takes time. Moderate heat lets the carrots soften while moisture evaporates; very high heat can burn milk solids on the base before the mixture has reduced evenly.
Stir more often as the halwa thickens
Early in cooking, plenty of liquid separates the solids from the pan. As that liquid disappears, scraping the base and corners becomes increasingly important because the mixture can catch quickly.
Understand what sugar changes
Sugar draws out moisture and changes the consistency of the mixture. Follow the recipe's sequence rather than adding it randomly, then continue cooking until the released moisture reduces to the texture you want.
Add ghee for finishing, not as a rescue for scorching
Ghee contributes richness and helps the finished halwa look glossy, but it cannot remove a burnt flavour. If the base has scorched, avoid scraping the burnt layer into the rest of the pan.
Know when to stop reducing
Gajar halwa thickens further as it cools. Stop when it is moist but no longer watery and the carrots are tender; cooking far beyond that point can make the dessert dry as well as increase the risk of burning.