Chicken tacos with pickled red onion

Ingredients

• 1 package small flour tortilla breads
• 2 cups cooked shredded chicken
• 1 jar of salsa (medium spice)
• 1 container of guacamole (250 milliliters is sufficient)
• 1 container sour cream or greek yogurt (454 milliliters)
• 1 cup shredded cheese (mozzarella or cheddar)
• 1/2 cup fresh cilantro
• 1 cup shredded iceberg lettuce
• 1 container of sliced pickled jalapenos
• 1/4 cup homemade pickled onions (recipe below)
• 2-limes, quartered

For the pickled red onion:

• 1 large red onion, thinly sliced lengthwise
• 1 tablespoon sea salt
• 1 teaspoon cumin seeds
• 3 cloves garlic, peeled and halved lengthwise
• 1 1/2 cups red wine vinegar (or a little extra if need be but essentially enough to submerge the onions completely)