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Friendliest.app says
Disney Pickles are individually wrapped and come in several varieties including Regular, Sour and Spicy.

Pickles are free of all the top 8 food allergens (gluten/wheat, milk, fish, shellfish, peanuts, tree nuts, eggs and soy.

Not all locations sell all flavors of pickles.

Pickle
Ingredients: cucumbers, water, salt, vinegar, calcium chloride, sodium benzoate (as a preservative), natural flavorings and spices.

Sour Pickle
Ingredients: cucumbers, water, salt, vinegar, natural flavor, alum, sodium benzoate and potassium sorbate (as a preservative), calcium chloride, alum, yellow #5.

Spicy Pickle
Ingredients: cucumbers, water, vinegar, salt, calcium chloride, potassium sorbate (as a preservative), spices, garlic, turmeric, polysorbate 80.