Salsa verde is a condiment usually based on green-colored tomatillos that also usually has an onion component (in our case, scallion greens), garlic (in our case, a low FODMAP equivalent), salt, cilantro, lime juice and some sort of chile, for heat.   You do need to make our Low FODMAP Salsa Verde first, to make this dish; it only takes about 5 minutes to make!