Bengal Barbecue Polynesian Sauce Recipe: Tropical Sweet Heat for Grilling

This tropical-inspired sauce brings sweet heat to any grilled dish with its perfect balance of pineapple and spice. I developed this version after testing countless combinations to capture that signature island flavor.

Easy to make with pantry staples, it adds depth to meats, seafood, or even as a dipping sauce. The blend of tangy and sweet creates a versatile condiment that elevates every bite.

Ingredients for Bengal Barbecue Polynesian Sauce

Pantry staples blend into this island-inspired sauce with bold tropical flavors ready in minutes.

[recipe_ingredient_scaler]

The pineapple juice is the soul here—Dole or Kern’s if you’re grabbing from the grocery store. Avoid the kind with added sugar, it throws off the balance. I use Heinz ketchup for consistency, but any thick, tomato-forward brand works. The molasses is non-negotiable though—Grandma’s or Brer Rabbit are my go-tos. It’s the secret to that deep, caramelized sweetness that makes this sauce special.

No pineapple juice? Canned crushed pineapple (drained, then pureed) gets you close. Out of molasses? Honey at half the amount works in a pinch (just know it changes the flavor slightly). The soy sauce can be swapped for coconut aminos if you need gluten-free. Want more heat? Sriracha or cayenne bumps it up. The vinegar is flexible too—white or red wine vinegar if you’re out of apple cider.

This keeps for 10-14 days in the fridge in an airtight container. Freezes beautifully for 3 months too—portion into ice cube trays for easy single-serving use. The flavors actually deepen after a day, so make it ahead if you can.

Step-by-Step Instructions for Polynesian Barbecue Sauce

This sauce comes together quickly with a few simple steps and a watchful eye.

Step 1: Combine the Liquid Base

In a medium saucepan, pour in the 1.5 cups Pineapple Juice, 0.75 cup Ketchup, and 0.25 cup Soy Sauce. These three form the backbone of the sauce, balancing sweet, tangy, and umami notes. Stir them together over medium heat until they begin to bubble gently at the edges.

This initial simmer helps meld the flavors and reduces the risk of scorching later. Watch for tiny bubbles forming around the perimeter—this signals the mixture is heating evenly without boiling over.

Step 2: Add Sweet and Tangy Elements

Once the base is warm, stir in the 0.5 cup Brown Sugar, 1 tbsp Molasses, and 2 tbsp Apple Cider Vinegar. The brown sugar will dissolve quickly, while the molasses adds a rich, deep sweetness that pairs perfectly with the vinegar’s sharp tang.

Keep the heat at medium and stir frequently to prevent the sugars from sticking to the bottom. You’ll notice the mixture darken slightly as the molasses incorporates—this is normal and adds to the sauce’s signature color.

Step 3: Incorporate Aromatic Spices

Now, add the 1 tsp Garlic Powder, 1 tsp Onion Powder, 0.5 tsp Ground Ginger, and 0.5 tsp Crushed Red Pepper Flakes. These spices bring depth and a subtle kick, transforming the sauce from sweet to complex.

Stir well to distribute the spices evenly. The crushed red pepper flakes will infuse the sauce with a mild heat that builds over time, so taste as you go and adjust if needed—though the given amount creates a balanced, crowd-pleasing flavor.

Step 4: Simmer to Perfection

Reduce the heat to medium-low and let the sauce simmer for 15-20 minutes. This is where the magic happens: the flavors deepen, the sauce thickens, and the ingredients harmonize into that unmistakable tropical sweet heat.

Stir occasionally and watch for the sauce to coat the back of a spoon. It should be glossy and slightly syrupy, but still pourable. If it thickens too much, add a splash of water or pineapple juice to loosen it. The sauce is ready when it has reduced by about a third and has a rich, consistent texture.

Dietary Considerations for This Dish

Gluten-Free Options

For a gluten-free version, simply swap the soy sauce for coconut aminos or a certified gluten-free tamari. I’ve tested both with great results—the flavor profile stays remarkably similar. The ketchup is typically gluten-free, but always double-check the label.

Vegan Adaptations

This sauce is naturally vegan as written! All ingredients are plant-based, so no modifications are needed. I often use this exact version at local BBQ competitions where vegan teams compete—it’s always a hit.

Reducing Sugar Content

To cut back on sugar, replace the brown sugar with ½ cup of monk fruit sweetener or reduce by half. The molasses adds depth, so don’t skip it entirely. Honestly, the sauce still tastes great with these tweaks.

Allergen Notes

This recipe contains no dairy, eggs, or nuts. However, check your soy sauce label for wheat if you have gluten sensitivities. For nut allergies, ensure your ketchup is produced in a nut-free facility.

Spice Adjustments

The crushed red pepper flakes can be omitted for sensitive palates. For extra heat, add ¼ tsp cayenne instead. I always recommend tasting as you go—your perfect heat level might differ from mine.

Storage Considerations

With its vinegar and sugar content, this sauce has a natural preservative quality. Still, keep it in an airtight container in the fridge. The flavors meld beautifully over 24-48 hours, making it even better the next day. 💡

Frequently Asked Questions