Cook your couscous as per package instructions using the chicken broth instead of the water. Season with salt and pepper to taste and add a drizzle of olive oil to the pot. Once done, transfer to a plate and let it cool.
To a large pan, add the butter or oil and then the corn. Sauté to get those brown marks on the kernels. Season with salt and pepper to taste.
Vinaigrette:
Whisk together all the ingredients and taste the dressing. Adjust if necessary.