Coke and Mountain Dew are typically Kosher but not for Passover. When Passover comes, some of the food and beverages that are typically kosher, now are not. The only way to tell is if they have " OK for Passover " somewhere on the product. There is a lot of food that people eat everyday that is kosher. Next time you go and by food, if there is a or an symbol, then the food you are buying is kosher. Here are some examples or kosher beverages:
A&W - (Root Beer, Cream Soda & Rochester Orange)
Aquafina Essentials (Pineapple, Sunfruit, Tangerine Watermelon, Wildberry)
Aquafina Sparkling (Original, Berry, Lemon Lime)
Aquafina Splash (Citrus, Raspberry, Wildberry)
Arizona Iced Tea and Flavored Water (when bearing O/U)
Barq’s (Cream, French Vanilla Cream, Red Creme, Red Rattler, Root Beer)
Club Soda (any brand unflavored)
Coca Cola (Coke, Caffeine Free, Classic, C2, Cherry Coke, Coke with Lemon, Coke with Lime, Vanilla Coke)
Cott (Cherry, Cola, Cream, Grape, half & half, Lemon Up, Orange, Quinine, Root Beer)
Country Delight (when bearing O/U)
Country Time Liquid (Regular Lemonade, Pink Lemonade - All Powders are certified when bearing O/K)
Crush (Birch Beer, Cream, Grape, Lime,Orange, Peach, Pineapple, Pink Grapefruit, Red Cream, Red Licorice, Spruce Beer, Strawberry, Tropical Punch)
Crystal Light (Liquids and Powders are certified when bearing O/K)
Dad’s Root Beer
Dr. Pepper (Regular, Cherry Vanilla, Red Fusion)
Lipton Iced Tea (Diet Lemon, Green Tea with Passion Fruit, Lemon Sweet, Peach, Plain, Plain Sweet, Raspberry, Tea & Lemonade)
Lipton Southern Style (Lemon, Sweet No Lemon, Extra Sweet No Lemon)
Mello Yellow
Minute Maid - Not Juice (Limeade, Yellow Lemonade)
Minute Maid Soda (Blue Cherry, Blueberry, Cherry, Fruit Punch, Grape, Grape Medley, Lemonade, Mixed Berry Fruit, Orange, Passionfruit Orange, Peach, Pineapple, Pink Lemonade, Raspberry Lemonade, Sour Blue Raspberry, Strawberry, Light Lemonade, Light Raspberry Passion, Light Guava Citrus, Light Valencia Orange)
Mountain Dew (Regular, Caffeine Free, AMP, Blue Shock, Code Red, Livewire, Pitchblack)
Mr. Pibb
Mug (Cream Soda, Root Beer)
Nestea Iced Tea (Lemon Sweet, Peach, Premium, Raspberry, Sweetened Southern Sytle, Unsweetened Southern Style)
Nestea Cool Iced Tea (Plain, Lemon, Peach Freezer, Raspberry Cooler)
Nestle Splash Flavored Water (O/U)
Pepsi Cola (Regular, Caffeine Free, Holiday Spice, Pepsi Blue, Pepsi Edge, Pepsi One, Pepsi Twist, Wild Cherry)
Here is link that I use to double check items that I am not a 100% sure on. Kosher food link The only reason I know anything about kosher food is because my wife’s parents keep kosher.