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This blackberry lime mocktail spritzer is a copycat recipe of Western New York’s famous fruity loganberry drink. This refreshing version features homemade sugar free blackberry syrup, and is the perfect way to cool down on a hot summer day!
If you’re from Buffalo, odds are you’re familiar with the loganberry drink.
A loganberry is an actual berry (it’s a blackberry-raspberry hybrid), but if you’re from Western New York the first thing to come to mind is probably the drink!
The Inspiration For This Mocktail: Western New York’s Loganberry Drink
Loganberry drink is syrupy sweet, caffeine-free, non-carbonated, and deep red in color. I’ve heard that this drink was originally sold at the Crystal Beach theme park in Ontario, and it’s popular in both Southern Ontario and Western New York. Growing up in Buffalo, I can say for sure that it was considered a Buffalo classic! You can read more about the loganberry drink on The Breeze.
If you’ve followed my blog for a while you probably know two things about me: 1) I’m from Buffalo, and 2) I keep it real. So I’m going to be honest with you about the loganberry drink. Even though I grew up with loganberry available everywhere, I tried it maybe twice and couldn’t even finish a full cup because it was just way too sweet for me (even as a kid).
But that doesn’t mean that I don’t like the idea of loganberry. And anything that reminds me of home is a winner in my book. So I put my own twist on it!
The Making of a Low Carb Mocktail
For this spritzer, I made a sugar-free blackberry syrup. However, you could use a mix of blackberries and red raspberries if you really want to try to simulate loganberry. My version is a lot less sweet with a lot fewer carbs than the original loganberry drink. Fresh lime juice really wakes it up and intensifies the flavor of the berries.
This syrup is lovely for making into fun summer drinks. Here I kept it simple with mint, lime, and sparkling water, and it couldn’t be more refreshing.
Ingredients
Breaking It Down
Ingredients Explained
In this section I explain the ingredients and give substitution ideas where applicable. For the full recipe (including the ingredient amounts), see the recipe card below.
Homemade Sugar Free Blackberry Syrup Ingredients
- Fresh blackberries – Or use half blackberries and half raspberries.
- Water – We cook the berries down in water.
- Sweetener – In the original recipe, I used 1 1/2 tablespoons granulated erythritol + 3 drops stevia glycerite as the sweetener. With how far keto sweeteners have come, my preference is now 3 tablespoons of granulated keto monk fruit/allulose sweetener. If you prefer regular granulated white sugar, you can use 3 tablespoons of that instead.
- Sea salt – Salt naturally enhances the berries’ flavor.
- Fresh lime juice – The bright, tart, citrusy flavor of fresh lime accentuates sweet/tart blackberries.
- Vanilla extract – For depth.
Blackberry Lime Mocktail Spritzer Ingredients
- Crushed ice
- Blackberry syrup
- Sparkling water
- Fresh mint sprigs
- Fresh limes
Instructions
Step 1: How to Make Homemade Sugar Free Blackberry Syrup
- Add the blackberries, water, sweetener, and salt to a medium saucepan. Bring to a boil, and then reduce the heat, cover, and simmer 10 minutes.
- Turn off the heat and let the berries steep in the liquid (covered) for 30 minutes to an hour.
- Use a fine mesh sieve to strain out the berries, reserving the liquid.
- Stir the lime juice and vanilla into the blackberry syrup.
Step 2: How to Make Loganberry Drink Mocktails
- Fill 4 glasses 2/3 full of crushed ice. Into each glass, add the following: 3 tablespoons homemade blackberry syrup, 8 ounces sparkling water, 1 mint sprig, and 2 slices of lime. Enjoy!
Variation: How to Make This Mocktail Into a Wine Spritzer
Reduce the amount of sparkling water by half and use wine instead. I prefer white wine (such as Sauvignon Blanc) for this. However, you can use any type of wine you like.
Tips For the Best Copycat Loganberry Drink
- The flavor of this homemade blackberry syrup is concentrated, which is why we mix it with sparkling water. To make a version that’s closer to the original non-carbonated loganberry drink (such as Aunt Rosie’s), use still water instead of sparkling.
- Play with the citrus in the syrup. Lemon works really well instead of lime, but you can have fun with it and try something a little different like blood orange. And if you don’t have fresh citrus on hand, use half the amount of vinegar instead for tart flavor (try it with balsamic vinegar!).
Frequently Asked Questions
It might come as a surprise that a loganberry is a real type of bramble berry! Belonging to the Rubus genus in the rose family, it’s a cross between a blackberry and red raspberry. Loganberries are elongated like blackberries, but bright red like raspberries.
This berry is tart and tangy with rich fruity notes and a sweet finish.
On the other hand, the drink of the same name that’s popular in Western New York and Southern Ontario is quite a bit sweeter than the fresh fruit. To be honest, it’s almost sickly sweet, the way a melted popsicle would be if sat in the sun for a while so its flavor concentrated. It’s a little bit like fruit punch and a little bit like blue raspberry, but not quite the same as either.
More Refreshing Drinks to Try
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Loganberry Drink Copycat (Blackberry Lime Mocktail Spritzer Recipe With Homemade Sugar Free Blackberry Syrup)
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Ingredients
Blackberry Syrup:
- 1 cup fresh blackberries (or half blackberries and half red raspberries)
- 1 cup water
- 3 tablespoons granulated keto sweetener (see Notes)
- 1 pinch sea salt
- 1 tablespoon fresh lime juice
- 1/4 teaspoon pure vanilla extract
Blackberry Lime Mocktail Spritzers:
- Crushed ice
- 3/4 cup blackberry syrup
- 32 ounces sparkling water
- 4 sprigs fresh mint
- 2 fresh limes (thinly sliced)
Instructions
Make the Blackberry Syrup:
- Add the blackberries, water, sweetener, and salt to a medium saucepan. Bring to a boil, and then reduce the heat, cover, and simmer 10 minutes.Turn off the heat and let the berries steep in the liquid (covered) for 30 minutes to an hour.Use a fine mesh sieve to strain out the berries, reserving the liquid.Stir the lime juice and vanilla into the blackberry syrup.
To Make the Mocktail Spritzers:
- Fill 4 glasses 2/3 full of crushed ice. Into each glass, add the following: 3 tablespoons homemade blackberry syrup, 8 ounces sparkling water, 1 mint sprig, and 2 slices of lime. Enjoy!
Notes
- Net Carbs: 4 grams per serving (1 serving = 3 tablespoons of syrup).
- Blackberry Syrup Recipe Yield and Serving Size: This recipe makes about 3/4 cup of syrup. Each serving is 3 tablespoons of syrup, for a total of 4 servings.
- Sweetener: In the original recipe, I used 1 1/2 tablespoons granulated erythritol + 3 drops stevia glycerite as the sweetener. With how far keto sweeteners have come, my preference is now a granulated keto monk fruit/allulose sweetener. If you prefer regular granulated white sugar, you can use 3 tablespoons of that instead.
- To Make Wine Spritzers Instead of Mocktail Spritzers: Use half sparkling water and half wine.
Nutrition
Nutritional information is automatically calculated and should be used as an approximate.
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This post was first published on An Edible Mosaic on July 31, 2017 and updated on July 9, 2026.
I’m the writer, recipe developer, photographer, and food stylist behind this blog. I love finding the human connection through something we all do every day: eat! Food is a common ground that we can all relate to, and our tables tell a story. It’s my goal to inspire you to get in the kitchen, try something new, and find a favorite you didn’t know you had.
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Looks tasty! I can not wait to try one!
Thanks for sharing this recipes…