What are the best techniques for keeping the vegetables in Trempó crisp if you prepare it in advance?

To keep the vegetables in Trempó crisp when preparing it in advance, it is essential to focus on proper selection and handling of the ingredients. Use fresh, firm vegetables—typically green peppers, tomatoes, and onions—which are the core of this Catalan salad. Choosing vegetables that are at their peak ripeness but not overly soft will ensure they retain texture and flavor over time. After washing, it is crucial to thoroughly dry the vegetables to prevent excess moisture, which can lead to sogginess and promote early wilting.

When cutting the vegetables, uniform, moderately sized pieces help maintain an even texture throughout the dish. After slicing, the vegetables can be briefly chilled or even soaked in ice water for a short period to reinforce their crispness before mixing them with olive oil and salt. The dressing should be added shortly before serving or just enough to lightly coat the vegetables without saturating them. Excess dressing can cause the vegetables to soften quickly, so it is advisable to store the salad and dressing separately if preparing much in advance.

Finally, storing Trempó in an airtight container in the refrigerator is key to preserving its freshness. Avoid prolonged exposure to air, which can cause the vegetables to lose their firmness. Ideally, prepare the salad no more than a few hours in advance; however, proper refrigeration and minimal dressing usage can help extend its crispness for up to a day. By focusing on these careful preparation and storage methods, the vegetables in Trempó will remain refreshingly crisp, allowing the salad to deliver its characteristic vibrant texture and taste even when served later.