In a medium saucepan, bring 1 quart of salted water to a boil and add 2 tablespoons of the lime juice. Add the shrimp, cover and return to a boil. Immediately remove from heat, set the lid askew and pour off all of the liquid. Replace the cover and let the shrimp steam off the heat for 10 minutes. Spread out the shrimp in a large bowl to cool completely. Toss the shrimp with the remaining ½cup lime juice, cover and refrigerate for 1 hour.
PREPARE THE FLAVORS:
In a small strainer, rinse the onion under cold water, then shake off the excess liquid. Add the onion to the shrimp along with cilantro, ketchup, hot sauce, olive oil, jicama, cucumber and avocado. Taste and season with salt (about 1/2 teaspoon). Cover and refrigerate if not serving immediately.
SERVE:
Spoon the ceviche into small bowls or martini glasses, garnish with cilantro sprigs and slices of lime. Serve with tortilla chips.
Notes
The ceviche is best eaten the day it's made. It can be prepared and combined a few hours ahead of time.
Nutritional information is for the ceviche only. Tortilla chips should be counted as extra.
If preparing this recipe as gluten-free, just be sure to use a brand of ketchup that is known to be GF.