Welcome to Dover's first self service hand crafted soda bar

At Birch Theory, our handcrafted soda bar is a little nostalgic, a little unexpected, and entirely customizable. Mix organic syrups with playful flavors with bubbly seltzer straight from the tap to create your perfect drink.

  • Vintage-style menu card for a drink called 'The Creamsicle' with orange syrup and vanilla syrup instructions.
  • Ginger Refresher recipe card with ginger and strawberry illustration on a peach background
  • Recipe card for a purple ube dream drink with syrup amounts and an optional ingredient on a purple background.
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Birch Theory soap bottles with various scents on a wooden shelf.

Current & Seasonal Flavors

  • Blackberry
  • Blackberry Sage
  • Dark Cherry Grenadine
  • Hazelnut
  • Hibiscus Rose
  • Ginger
  • Lavender
  • Maple Delight
  • PH Delight
  • Pumpkin Butternut Spice
  • Sarsaparilla
  • Simple Syrup
  • Toasted Caramel
  • Vanilla
  • Sugar-Free Vanilla
  • Sugar-Free Lavender

Soda Bar Frequently Asked Questions

How does it work?

It's easy and self serve (but we can help if you need it). You simply pick your syrup flavor or flavors, add ice, add in the carbonated water from the tap, mix and voila, you are done!

Do you sell the syrups?

We sell select syrups in the store. We currently do not sell the syrups online.

What if I have dietary restrictions?

The sodas are caffeine-free, gluten-free, vegan and dairy-free. We do have the option to add in unsweetened coconut milk.

What sizes are available?

We have a 12 oz cup for $2.50 and a 20 oz cup for $5.00.

What is cool about the cups?

Traditional paper cups hide a layer of plastic inside. Nothing Cups don’t. They use a water-based coating that’s food-safe and vanishes in under 180 days. With built-in lids, they create less waste, streamline operations, and save space.

In addition, unlike regular paper straws, Nothing Straws stay strong for hours without getting soggy. They’re thicker, sturdier, and built for every kind of drink.