This soup is fresh and vibrant in both flavor and color. The broth is green and herbaceous with cilantro, while carrots, bell pepper and peas add brightly hued bursts of vegetable sweetness. Traditional aquadito includes starchy Peruvian corn. Rather than substitute sweet corn, which is far more sugary, we opted to omit it. The soup gets mild spiciness from ají amarillo, an orange-yellow chili with a fruity yet earthy flavor that is ubiquitous in Peruvian cuisine. In fresh form, the chilies are difficult to find in the U.S., but ají amarillo paste, sold in jars, is available in some well-stocked markets and specialty stores, as well as online. If you can't find it, use 2 or 3 seeded and finely minced jalapeños.