Pico de gallo is not salsa — it's a fresh relish. No blending, no cooking, no canned anything. The difference between good pico and great pico comes down to two things: sharp knife work and salt timing. Dice everything roughly the same size so every bite is balanced. Salt the tomatoes first and let them sit for five minutes — that pulls out just enough liquid to create a natural dressing without making it soupy. Use white onion, not yellow — white has that clean, sharp bite that cuts through the acid. Fresh lime juice is non-negotiable; bottled lime juice tastes like chemicals. If you have access to serrano peppers, use those over jalapeño for a brighter, sharper heat. Make it the same day you're eating it — pico doesn't hold well overnight because the tomatoes break down and it gets watery. This is a same-day prep, not a make-ahead component.