Char the poblano chili over gas flame or in a broiler until blackened on all sides.
Enclose the charred chili in a paper bag for 10 minutes. After roasting the poblano, carefully peel off the charred skin, being careful to keep the stem intact. Remove the stem and discard along with the seeds. Finely dice the roasted poblano.
In a medium mixing bowl, add the corn, red onion, jalapeño, poblano pepper, cilantro and lime juice.
Stir to combine then season to taste with salt. Serve.