Press raspberries lightly against the glass with a wooden muddler to release juice without crushing seeds, which can create bitterness and grittiness in your drink.

Prepare your raspberry syrup 1-2 hours in advance and chill it thoroughly; this intensifies the flavor and ensures a perfectly balanced, refreshing drink without dilution from fresh fruit.

Use only the tender top leaves and stems of mint, as larger mature leaves contain more oils that can turn bitter when over-muddled; fresh, young mint provides cleaner, brighter flavor.

Pre-chill your serving glass with ice for at least 2 minutes before assembling; this maintains the optimal drinking temperature and prevents the drink from warming too quickly.

Use fresh-squeezed lime juice and taste as you go—the acidity should brighten the raspberry sweetness without overpowering it, typically needing about 0.5 oz per drink.