Protein powder is one of the most popular and effective supplements for building muscle, recovering from training, and hitting your daily protein target. But once you’ve bought the tub, the everyday question is what to actually mix it with. The right choice can make your shake tastier, more convenient, and better suited to your goals.
The honest starting point is this: what you mix your protein with doesn’t change how much muscle you build, that comes down to your total daily protein and calories. What it does change is the calories, carbs, and fats you add around it, along with the taste and texture. So the best mixer is the one that fits your goal and that you’ll happily drink every day. Here are twelve of the best options.
This article is informational and not a substitute for individual dietary advice.
How to Choose Based on Your Goal
Before the full list, here’s the quick logic that guides most choices:
- Cutting or watching calories? Water is your best friend. It adds nothing but keeps the protein.
- Bulking or gaining mass? Milk and other calorie-dense mixers help you pack in extra energy.
- Want flavour or a post-workout treat? Milk, juice, coffee, or a blended smoothie deliver on taste.
- Dairy-free? Plant milks and water have you covered.
Keep your goal in mind as you read, and you’ll quickly land on a combination that works for you.
So, What Can You Mix Protein Powder With?
1. Water
Water is the most common and convenient choice, and for good reason. It’s calorie-free, cheap, mixes instantly, and delivers all the protein with nothing added, which makes it ideal for cutting or controlling calories. A shake with water lands around 110 to 130 calories, versus roughly 270 with whole milk, and whey actually digests a little faster in water too. It can taste thin on its own, but a little fruit or nut butter fixes that. For the full breakdown, including a great-tasting recipe, see our dedicated guide on mixing protein powder with water.
2. Milk
Milk is the go-to for anyone looking to bulk up or add mass. It brings extra protein, carbohydrates, fats, and calcium, all of which add the calories a gaining phase needs, along with a creamier, more satisfying texture. Those carbs also help refuel your muscles after training. The trade-off is simply the higher calorie count, which is a benefit when gaining and a drawback when cutting. Whole, semi-skimmed, or skimmed milk lets you dial the calories up or down.
3. Chocolate Milk
Chocolate milk has a genuine reputation as a post-workout recovery drink, thanks to its blend of carbohydrates and protein that helps replenish energy and support muscle repair. Add a scoop of protein and you boost that further. It’s tasty and effective for recovery and gaining, but keep in mind it’s higher in sugar and calories, so it suits mass-building goals more than a cut.
4. Plant-Based Milks
If you’re dairy-free or just prefer them, plant milks like almond, soy, oat, and coconut all mix well with protein powder. They vary in profile: almond milk is light and low in calories, soy milk offers the most protein of the group, oat milk is creamier and higher in carbs, and coconut milk adds a distinctive flavour. Choose unsweetened, fortified versions where possible to avoid added sugar and to get added calcium and vitamins. They’re a great way to add creaminess without dairy.
5. Yogurt
Mixing protein powder into yogurt makes for a thick, spoonable high-protein snack rather than a drink. Greek yogurt works especially well, adding even more protein plus gut-friendly probiotics. Vanilla and fruit-flavoured powders blend in nicely. It’s a filling, satisfying option that works brilliantly as a snack or light meal, and stirring the powder in gradually keeps the texture smooth.
6. Oats or Cereal
Stirring protein powder into oatmeal or overnight oats is one of the best ways to upgrade a breakfast, adding protein and helping keep you full for longer. It’s a favourite for anyone building a high-protein morning meal. Use an unsweetened powder to keep control of the sugar, and add the powder once the oats are cooked and slightly cooled so it blends smoothly.
7. Coffee
Mixing protein into coffee, affectionately known as “proffee,” has become hugely popular as a way to get your caffeine and protein in one go. Done right it’s smooth and delicious, though hot coffee needs a little technique to avoid clumping. And to clear up a common worry, the heat does not destroy the protein or reduce its value. We cover exactly how to make it, hot or iced, in our full guide on mixing protein powder with coffee.
8. Fruit Juice
Fruit juices like orange or apple add natural sweetness, flavour, and a hit of carbohydrates, which can be useful around workouts for topping up energy. The catch is the sugar content, so juice is best kept for pre- or post-training rather than an all-day habit, and it suits gaining goals more than cutting. Matching the juice to a complement.
9. Sports Drinks
Mixing protein into a sports drink like Gatorade adds carbohydrates and electrolytes alongside your protein, which some people like for longer or more intense training sessions. As with juice, the main consideration is the added sugar, so it’s an occasional, workout-focused option rather than an everyday one. It can be handy when you want fuel and fluids as well as protein.
10. Egg Whites
For a serious protein hit, some people blend pasteurised liquid egg whites into their shakes or smoothies for extra high-quality protein with very little fat. Always use pasteurised egg whites rather than raw ones to avoid any risk of foodborne illness. Blended into a smoothie with fruit, they add protein without much change to the taste. Our guide on drinking egg whites covers the benefits and safety in more detail.
11. Collagen
Collagen peptides are worth a mention, but with an important clarification. Collagen is a different type of protein aimed at skin, hair, and joint support, and it is not a complete protein for building muscle the way whey is. You can add a scoop to a shake or coffee, where it dissolves very smoothly, but treat it as a supplement alongside your main protein rather than a replacement for it.
12. A Blended Smoothie
When in doubt, blend it all. A smoothie lets you combine several of the above, for example milk or a plant milk, a banana, some frozen berries, a spoon of nut butter, and your protein, into one balanced, delicious meal in a glass. It’s endlessly customisable to your goals, adding more fruit and nut butter for gaining or keeping it lean with water and berries for cutting. Blending also gives the smoothest possible texture.
How Many Shakes Should You Have?
Whatever you mix it with, protein powder is a supplement, meant to top up a diet based on whole foods rather than replace it. Most people do well with one or two shakes a day to help hit their target, which you can work out in our guide on how many protein shakes a day. If you’re wondering about non-training days, we’ve also covered whether to drink protein shakes on rest days.
Frequently Asked Questions
What is the best thing to mix protein powder with? It depends on your goal. Water is best for cutting and calorie control, milk is best for bulking, and options like yogurt, oats, coffee, or a smoothie are great for taste and variety. The best choice is the one that fits your goals and that you’ll drink consistently.
Does what you mix protein with affect muscle growth? Not directly. Muscle growth depends on your total daily protein and calories, not the specific liquid. What you mix it with changes the calories and macros around the protein, plus taste and texture, rather than the quality of the protein itself.
What should I mix protein powder with to lose weight? Water is the best choice when losing weight, as it keeps the shake low in calories while delivering the full protein content. Unsweetened plant milk or blending with water and some fruit are also good lower-calorie options.
What should I mix protein with to gain weight? Milk, chocolate milk, oats, juice, or a calorie-dense smoothie all add extra energy to support gaining. Whole milk in particular is a classic choice for hard gainers.
Can you mix protein powder with hot drinks? Yes. It won’t damage the protein, though hot liquids like coffee can cause clumping. Mixing the powder into a cold paste first or using a frother solves this, and iced versions mix even more smoothly.
The Bottom Line
There’s no single best thing to mix protein powder with, only the best option for your goal and taste. Reach for water when you’re cutting, milk when you’re bulking, and mix things up with yogurt, oats, coffee, or a smoothie whenever you want variety and flavour. Remember that the mixer shapes the calories and enjoyment of your shake, not the muscle-building power of the protein itself.
Experiment, find the combinations you genuinely look forward to, and you’ll find it far easier to hit your protein target day after day. That consistency, more than any single mixer, is what delivers results.
