NOTE: I have also used frozen bay shrimp that has been thawed. For the artichoke hearts I have used either the jarred marinated or frozen hearts-thawed.
Make the cocktail dressing first by combining the mayonnaise, chili sauce, parsley, Worcestershire, and black pepper. Cover and chill.
Cut grapefruits in half. Remove the fruit segments with a serrated (grapefruit) spoon. Cut the fruit segments up into bite sized pieces and toss with the lemon juice.
Clean out the grapefruit shells and remove pith; set aside.
In a bowl gently mix the grapefruit, shrimp, cayenne and rum. Cut the marinated artichokes* up into bite sized pieces and combine with the grapefruit/shrimp mixture.
*If using frozen artichoke hearts, squeeze out the excess moisture gently with your hands.
Divide the mixture and spoon into the grapefruit shells. Divide and spoon the cocktail dressing on top of each grapefruit shell. Garnish with lemon slices and fresh parsley (or cilantro leaves).
Serve immediately.

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Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	435.8 Kcal (1825 kJ)
Calories from fat	405.11 Kcal
		% Daily Value*
Total Fat	45.01g	69%
Cholesterol	34.15mg	11%
Sodium	637.54mg	27%
Potassium	441.65mg	9%
Total Carbs	26.36g	9%
Sugars	3.97g	16%
Dietary Fiber	4.15g	17%
Protein	6.35g	13%
Vitamin C	54.4mg	91%
Iron	0.2mg	1%
Calcium	56.5mg	6%

Amount Per 100 g
Calories	147.13 Kcal (616 kJ)
Calories from fat	136.77 Kcal
		% Daily Value*
Total Fat	15.2g	69%
Cholesterol	11.53mg	11%
Sodium	215.24mg	27%
Potassium	149.11mg	9%
Total Carbs	8.9g	9%
Sugars	1.34g	16%
Dietary Fiber	1.4g	17%
Protein	2.15g	13%
Vitamin C	18.4mg	91%
Iron	0.1mg	1%
Calcium	19.1mg	6%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.