Add the chia seeds to 3 tablespoons of water and stir once so the seeds separate evenly. Leave the mixture undisturbed until the seeds have absorbed the water and formed a gel-like coating around each grain. This soaking stage is essential, as properly hydrated chia seeds soften fully and stay suspended instead of sinking or clumping in the drink.
Transfer the fresh curd to a bowl and whisk it continuously until it becomes completely smooth and free of lumps. Taking time at this stage helps create a light, even base for the drink. The curd should appear glossy and flow easily, indicating it is ready to be diluted.
Pour the drinking water into the whisked curd and churn or whisk again until the mixture turns thin and pourable. Proper dilution ensures the buttermilk feels light on the palate. This texture also allows the spices and chia seeds to spread evenly throughout the drink.
Stir the soaked chia seeds into the buttermilk along with the soaking liquid. Mix gently so the gel layer around the seeds remains intact. At this point, the drink should have a light consistency with chia seeds evenly distributed and visible throughout.
Add salt, roasted cumin powder, finely grated ginger, and chopped curry leaves to the mixture. Stir thoroughly so the flavours blend smoothly with the buttermilk. Each ingredient contributes aroma and digestive warmth without overpowering the mild, cooling base.
Place the prepared drink in the refrigerator for a short rest to let the flavours settle and mellow. Before serving, give it a gentle stir to redistribute the chia seeds evenly. Serve chilled for a clean, refreshing finish.