In a small container, add the vodka, sliced strawberries and crushed peppercorns. Cover and allow to infuse for about an hour.
Fill a low-ball glass with ice (or use one large chunk of ice). Strain the vodka over the ice into the glass. Top with a splash of soda water. Garnish with extra strawberry slices and peppercorns.
Notes
Discard the solids from the infusion, after straining out the liquid.You can drink the strawberry vodka straight, without the addition of the soda water, if preferred.