Homemade Lemon-Lime Electrolyte Drink Mix

Most store-bought electrolyte mixes are doing two things at once: replacing what your body loses when you sweat, and charging you a dollar or two per packet to do it. This homemade lemon-lime electrolyte drink mix does the same job with five pantry ingredients — sugar, sea salt, cream of tartar, lemon juice powder, and lime juice powder. One pint jar makes about 24 servings and costs a fraction of what the packets run.

Two tablespoons stirred into 16 to 20 ounces of cold water gives you a bright, citrusy drink that covers the two electrolytes your body actually loses when it sweats: sodium from the sea salt and potassium from the cream of tartar. It tastes like lemonade and limeade got together and decided to be useful.

What’s in It and Why

Five ingredients, each doing something specific:

• Granulated sugar — not just for sweetness. Sugar helps your body absorb sodium and water more efficiently — it’s the same reason commercial sports drinks include it. If you’re going sugar-free, a granulated substitute works; just taste and adjust since sweetness levels vary significantly by brand.
• Fine sea salt — the sodium electrolyte. Sodium is one of the two main minerals your body loses when you sweat. Fine sea salt dissolves more easily than coarse, which matters in a cold-water drink.
• Cream of tartar — the potassium source. This is the ingredient that makes this mix a proper electrolyte drink rather than just flavored salt water. Cream of tartar is potassium bitartrate — a natural byproduct of winemaking and a common pantry staple. It has a mildly tart flavor that blends right into the citrus profile without standing out.
• Lemon juice powder — real citric acid and lemon flavor in shelf-stable form. It gives the mix its tartness and the bright top note you want in a citrus drink.
• Lime juice powder — rounds out the citrus with a slightly more complex, aromatic flavor than lemon alone. The combination of both is what makes this taste like something rather than just sour sugar water.

Where to Find Lemon and Lime Juice Powder

Lemon juice powder and lime juice powder are the ingredients that get the most questions. You won’t find them in the regular spice aisle at most grocery stores, but they’re easy to order online — Amazon carries several brands, and Hoosier Hill Farm is a reliable option for both. Some specialty grocery stores and bulk food stores carry them as well. They store well sealed in a cool, dry spot and are useful in a lot of other dry mixes, so a bag goes further than just this recipe. Cream of tartar, meanwhile, is in the baking aisle at any grocery store.

How to Mix and Use It

To make the mix: whisk all five ingredients together in a bowl until evenly combined, then transfer to a pint mason jar with a tight-fitting lid. The whole process takes about two minutes.

To make a drink: add 2 tablespoons of the mix to 16 to 20 ounces of cold water — 16 ounces gives a more pronounced flavor, 20 ounces is milder. Shake or stir until fully dissolved. The sugar and salt take a few extra seconds in cold water, so give it a good stir or use a lidded bottle and shake it.

A note on the jar: the citrus powders can clump slightly if the jar sits in a humid spot. Give it a shake before measuring to redistribute everything evenly.

The Sugar-Free Version

Replace the 1 cup of granulated sugar with an equal volume of your preferred granulated sugar substitute. Monk fruit sweetener, erythritol, and allulose all dissolve similarly to sugar and work well here. Powdered stevia is much more concentrated, so if that’s what you’re using, start with far less and taste as you go. Liquid sweeteners won’t work in a dry mix.

One thing worth knowing: sugar plays a functional role in electrolyte absorption, not just a flavor one. The sugar-free version is still a good hydration drink, but if you’re using it specifically after heavy exertion or illness, the original version with sugar will be more effective at helping your body actually absorb the fluids.

When to Use It

This mix earns its pantry space because it covers a surprising range of situations:

• Hot weather and outdoor work — yard work, gardening, anything that has you sweating. A cold glass of this is genuinely more refreshing than plain water when you’ve been outside for a while.
• After exercise — post-workout hydration without the neon dye and unreadable ingredient list of a commercial sports drink.
• When someone is sick — stomach bugs, fever, or anything that causes dehydration. The sodium and potassium combination replaces what the body loses.
• Travel days — long car rides or flights where you want to stay hydrated without paying airport prices for a sports drink.
• Kids’ sports and activities — a clean, simple alternative to commercial sports drinks with ingredients parents can actually read.
• Everyday drinking — some people drink it daily because it’s more enjoyable than plain water and keeps them consistently hydrated.

Variations Worth Trying

The lemon-lime base adapts easily:

• All lemon — use 6 tablespoons of lemon juice powder and skip the lime for a straight lemonade-style electrolyte drink.
• All lime — same idea in the other direction, more like a limeade.
• Orange — substitute orange juice powder for one or both citrus powders.
• Strawberry lemonade — add 2 tablespoons of strawberry powder to the base mix.
• Sparkling — mix with sparkling water instead of still for a homemade citrus soda feel.

Storing the Mix

Store in an airtight pint mason jar in a cool, dry place for up to a year. If you live somewhere humid, a food-safe silica packet in the jar helps keep the citrus powders from clumping. Label it with the date and the use ratio — 2 tablespoons per 16 to 20 oz water — so it’s grab-and-go ready. It also makes a genuinely useful mason jar gift: clean ingredients, simple instructions, and something people will actually drink.

Frequently Asked Questions

What does cream of tartar do in an electrolyte drink?

Cream of tartar is potassium bitartrate — a natural source of potassium, which is one of the two main electrolytes your body loses when it sweats (sodium is the other). Adding it to this mix means you’re replacing both, the same way commercial electrolyte drinks do. It also has a mild tartness that blends naturally into the citrus flavor.

Is this actually an electrolyte drink or just flavored water?

It’s a real electrolyte drink. The sea salt provides sodium, the cream of tartar provides potassium, and the sugar helps your body absorb both along with the water. That’s the same functional formula commercial sports drinks use — this one just skips the artificial colors, flavors, and preservatives.

Can I use fresh lemon and lime juice instead of powder?

Not in the dry mix — fresh juice would make it wet and it wouldn’t store. For a single fresh-made serving, squeeze half a lemon and half a lime into 16 ounces of water, add 1 tablespoon of sugar, ¼ teaspoon of fine sea salt, and a pinch of cream of tartar. Same drink, made to order.

My mix is clumping. What do I do?

Citrus powders are hygroscopic — they absorb moisture from the air. If your mix has clumped, break it up with a fork or give the jar a hard shake; it’s still perfectly usable. To prevent it, store the jar away from the stove and sink, use a tight-fitting lid, and consider adding a food-safe silica packet.

How does this compare to Liquid IV or Pedialyte?

Commercial products like those often include additional electrolytes — magnesium, chloride — plus B vitamins in some cases. This mix covers the two main ones: sodium and potassium. It’s a solid everyday hydration drink and works well for normal activity and mild dehydration. For severe illness or endurance athletics, a product with a broader electrolyte profile may serve you better.

Can I give this to kids?

Yes — the ingredients are straightforward and kid-friendly. For younger children, try 1 tablespoon per 16 ounces for a milder flavor and lower sugar content. The sugar-free version works fine for older kids who prefer it less sweet.