Recipe Note
Recipe FAQ
How long should I brine the corn?
A minimum of 30 minutes gives the brine time to begin penetrating the kernels, but 1–2 hours produces noticeably more flavor. If you're short on time, soaking while you preheat the grill is better than skipping the brine entirely — even 15–20 minutes adds measurable jalapeño and lime character compared to plain corn.
Can I use a different type of cheese?
Yes — Cotija is the most natural substitute and gives a saltier, crumblier finish closer to traditional Mexican street corn. Parmesan works well for a sharper, drier topping. Asiago is the recommended choice here for its nutty, slightly creamy melt when it hits the hot corn directly on the grill.
How do I know when the corn is done?
Look for consistent char marks on each side with kernels that have slightly deepened in color — typically 15–20 minutes total at 350°F, turning every 4–5 minutes. The kernels should feel tender when pierced with a knife tip and the surface should have visible grill marks without burning to black.
Can I prepare the brine in advance?
Yes — combine the Sweetwater Spice concentrate, lime juice, and water ahead of time and refrigerate in a sealed container for up to 24 hours. Add the corn when you're ready to brine and proceed from there.
Can I make this indoors?
3 out of 5 — Works indoors with adjustments. A cast iron grill pan over high heat produces char marks and caramelization close to the outdoor grill result. The brine and cheese steps are entirely prep-table regardless. What you lose slightly is the open-flame char character and any ambient smoke from the grill environment.
Recipe Highlights
Fully submerge the corn in the brine — don't just coat it: The directions call for adding water until the corn is fully submerged after the concentrate and lime juice are combined. A partial soak seasons only the exposed kernels; full submersion ensures the brine reaches every surface evenly during the soak.
Grill at 350°F in direct mode, not indirect: Direct grilling at 350°F is what produces the char marks and caramelization on the corn surface. Indirect heat at the same temperature would steam the corn rather than char it, missing the textural contrast that makes this recipe work.
Add the Asiago while the corn is still on the grill: Sprinkling the cheese directly onto each side while the corn is still over the heat allows it to melt slightly and adhere to the kernels rather than sitting as a dry topping. Adding cheese after pulling from the grill means it stays cold and powdery rather than melting in.
Turn on all four sides for even char: Rotating the corn to expose all four "faces" of the cob — rather than just top and bottom — produces even grill marks and caramelization all the way around. Cooking only two sides leaves the uncharred faces pale and under-seasoned by comparison.
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