When you're looking for a morning boost, there's nothing like a cup of coffee. But caffeine alone won't tide you over until lunchtime.

Keep reading to learn about 10 things that can add protein to your java fix, from butter to dried mushrooms.

Butter is a key ingredient in "Bulletproof" coffee.

"Bulletproof" coffee - a popular beverage among Paleo and Silicon Valley crowds - features butter as a primary ingredient.

This blend of grass-fed butter, medium-chain triglycerides (partially man-made fats found in coconut oil), and brewed coffee is designed to help drinkers stay full and burn fat by increasing the body's production of ketones.

Egg coffee is a Scandinavian innovation.

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Coffee may be one of the more surprising things you can improve with an egg.

A Scandinavian innovation, egg coffee is a great way to get protein in your morning joe. It's brewed by boiling a mixture of raw egg, coffee grounds, and water, and then straining the concoction.

Blend whey protein and coffee for a cappuccino-like beverage.

You may be familiar with whey from the nursery rhyme "Little Miss Muffet," or from your local vitamin and supplements store, where it's typically sold as a powder.

Studies have shown that this milk protein, which is separated from casein or formed during cheese-making, boasts health benefits ranging from lowering cholesterol to supporting weight loss. It's also favoured by gym-goers seeking to build up muscles.

Add whey protein to your coffee by stirring it in, or combine coffee and whey in a blender for a foamy beverage with a cappuccino-esque consistency.

Collagen powder will give your coffee a boost.

Despite collagen's association with the beauty industry, this amino-rich protein found in skin and other connective tissues is having a moment as a health food.

Just a teaspoon of collagen powder is all it takes to give your morning cuppa an upgrade, according to The Kitchn.

But it's worth noting that more research is needed on the benefits of ingesting collagen.

High-protein creamers will take your coffee to the next level.

Nixing artificial, sugar-packed creamers will make your coffee healthier. But you don't have to skip the creamy goodness altogether.

Recipes vary, but some key ingredients include heavy-hitters like whey protein and collagen. If you're short on time, you can also buy premade versions.

If you don't consume dairy, soy milk is a protein-packed alternative.

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For some, topping off a cup of coffee with milk is a necessity. If you're dairy-free, soy milk is one of the best alternatives, according to a 2017 study in the Journal of Food Science and Technology. Of all the non-dairy options out there, soy milk packs the most protein - 7 to 12 grams per 220 gram serving.

Although it doesn't offer nearly as much protein, almond milk is a good choice if you're looking to add healthy fats to your diet.

Peanut butter and coffee could be your new favourite combo.

Peanut butter and jelly is the classic combo, but the nutty spread also pairs well with coffee - especially if you add some chocolate to the mix, like in this recipe for a sweet, mocha-style drink.

Those with a peanut allergy can substitute alternatives like soy nut butter or sunflower seed butter.

Combine coffee with nut butter and non-dairy milk for a vegan Starbucks-inspired beverage.

Take a page from Starbucks' book and make a vegan protein smoothie by combining coffee with nut butter, non-dairy milk, and other nutritional fix-ins such as cacao powder and banana.

Give your coffee an earthy upgrade with dried mushrooms.

Dried mushrooms are one of the most protein-rich veggies on the planet - and adding them to your coffee is less odd than it sounds. In fact, Los Angeles-based company Four Sigmatic sells instant coffee made with mushrooms.

Thanks to the power of polysaccharides, varieties such as cordyceps, chaga, and reishi are also said to have immune-boosting and stress-relieving properties.

Spirulina, a blue-green algae, is full of nutrients.

Spirulina is a nutrient-dense algae characterised by its blue-green colour.

With four grams of protein per tablespoon (not to mention solid amounts of magnesium, manganese, and potassium), powdered spirulina can be added to coffee. It can also serve as the basis of a bean-free brew.

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