Peel and grate your cucumber and place in a fine mesh sieve - Set aside to drain away some liquid until needed
Place small dry skillet over medium-low heat - Add cumin seeds and peppercorns and toast for until fragrant (apx 2 minutes)
Remove from heat and allow to cool for a minimum 10 minutes
Transfer toasted ingredients to a clean coffee grinder, spice mill, or mortar and pestle and grind into a fine powder
In a medium, nonreactive bowl, add the yogurt and whisk until smooth
Add the grated cucumber, diced tomato, diced chiles, granulated sugar, and roasted/ground spices and fold until thoroughly combined
Adjust seasoning with salt to taste
Cover and place in the refrigerator for at least 1 hour before serving (overnight for best results) to allow flavors to meld
Serve as a cold soup, a starter salad, with bread or crackers as a snack, or alongside spicy dishes as part of any Goan/Konkani or Indian meal to 'cut the heat'
*Can substitute 1 large English cucumber (Kakri) - no need to peel