Super Easy Immune-Building DIY Herbal Cough & Cold Syrup

October 5, 2026

This is one of the first herbal preparations I ever made, and I'll admit that at the time it sounded a little disgusting. Onion, garlic, and ginger, steeped in honey, on purpose. My palate has come a long way since then, and this syrup is genuinely delicious: sweet, sharp, and warming all the way down.

Here you'll find:

Why This Herbal Syrup Beats The Drugstore Bottle
A Folk Remedy With Deep Roots
Herbal Cough & Cold Syrup: About the Ingredients
How To Use This DIY Herbal Cough Syrup
How To Make: Immune-Building Cough & Cold Syrup (Recipe)

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Why This Herbal Syrup Beats the Drugstore Bottle

I came across an article many years ago explaining that cough syrup is among the most misused and habit-forming over-the-counter medications out there. Which, like anyone trained in clinical nutrition, sent me back to the labels. Have you ever read one?

Artificial flavors, artificial colors, sometimes alcohol, and depending on the formula, opioid or opioid-like compounds. This syrup has none of that. No drowsiness, no impairment, nothing habit-forming. It is made from four common kitchen ingredients, and the work is done by the plants and the bees.

There may come a day when an over-the-counter syrup is the right call, and that's fine. Until then, a jar of this in the fridge is a simple way to look after yourself first.

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A Folk Remedy With Deep Roots

Nothing about this syrup is new, and I can't take credit for the idea. Onion and honey have been paired against coughs for centuries. Versions turn up in India, Germany, Hungary, and beyond, from onions boiled in wine and honey to sliced onion layered under sugar until the juice runs.

One well-loved modern version comes from herbalist Rosemary Gladstar. In Medicinal Herbs: A Beginner's Guide, she shares "A Simple Honey-Onion Syrup for Colds": thinly sliced onions barely covered in honey, warmed over very low heat until the onions are soft and the honey tastes strongly of onion. She notes you can add chopped garlic for a stronger syrup.

This version here skips the heat, steeps it raw, and brings ginger into the jar, but the lineage is plain to see. Consider this recipe one more stop along a very long line of herbal kitchens.

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Herbal Cough & Cold Syrup:
About The Ingredients

There are only four ingredients in this herbal cough and cold syrup:

Ginger
Onion
Garlic
Honey

That's it. Everyone of them has a long history of use for immune support, and each still earns its place in kitchens and herb cabinets today.

Ginger is one of the most versatile roots in your pantry. It's warming, stimulating, earthy, and spicy, and while it carries no meaningful amount of vitamins or minerals, it does a remarkable amount of work. In herbalism, ginger is considered to be:

Antioxidant
Expectorant
Carminative
Antimicrobial
Anti-inflammatory
Circulatory stimulant
Anti-nausea

Onions and garlic are the quintessential immune-supportive foods, and they show up in nearly every cuisine for good reason. Both are rich in vitamin C, vitamin B6, and a range of other nutrients, but the sulfur compounds are the real stars.

These organic sulfur compounds are strongly anti-inflammatory, they are the subject of a great deal of current research (including cancer research), and they have a long history in folk use. Garlic and onions are also:

Antioxidant
Antimicrobial
Immune supportive
Anti-inflammatory

Honey is the carrier, the preservative, and the reason you'll actually want to enjoy this cough and cold syrup by the spoonful. Its high concentration of beneficial phytochemicals and antioxidants earns it superfood status, and as a general rule, the darker the honey, the more of those plant compounds it holds.

If you can, find a local beekeeper who doesn't heat-process their honey. Most grocery store honey is heat treated, which diminishes much of what makes honey worth eating in the first place. Raw, local honey is always the best choice for a syrup like this.

→ TRY THIS
Want a sweet spoonful on the days between batches of this herbal syrup? Our Elder Sage Herbal Honey is made with raw Appalachian honey, elderflower, sage, and reishi mushroom. It's built to support immune health and it's lovely stirred into hot water or taken straight off the spoon.

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How To Use This DIY Cough Syrup

This syrup does double duty. Use it for everyday immune support, or reach for it when something is already coming on.

For Everyday Immune Support

Like elderberry syrup, this is a good cold-season habit. Take it in the morning or at night, or whenever you feel a little something coming on. It's high in antioxidant, anti-inflammatory, and antimicrobial support, which makes it a good friend to have in your corner before the seasonal ick settles in. And if the ick does settle in, this syrup is a comforting thing to have on hand while you ride it out.

Suggested Use for General Immune Support: By the spoonful, straight or stirred into warm water, in the morning, at night, or whenever you feel a little something coming on.

→ TRY THIS
If you like the idea of an everyday spoonful to support your immune health, try our Elder & Lemon Thyme Elixir. It's an easy daily addition to a glass of sparkling water, a mug of hot tea, or straight from the spoon.

For a Sore Throat & Cough

Sore throats and stubborn coughs make life miserable, and it helps to know which kind you're dealing with. A dry, tickly cough is an irritated throat with nothing to clear, so it calls for something soothing and coating, and that is where honey shines.

A wet, rattling cough is your body moving mucus out, so the goal is to help it along, and that is where pungent plants like garlic, onion, and ginger come in.

For a sore throat or dry, tickly cough, take a spoonful straight or stirred into warm water. For a wet, congested cough, stir the jar first so each spoonful carries plenty of garlic, onion, and ginger doing the clearing work.

→ TRY THIS
A mug of Sage Advice Herbal Tea alongside your spoonful is a good pairing. Sage and peppermint are both long-time favorites for a scratchy throat, and the warm steam helps too.

Customize To Your Own Taste

This syrup is so adaptable that writing out a recipe for it feels a little silly. For simplicity's sake, the recipe below uses equal parts onion, garlic, and ginger. Use more ginger and less onion and garlic if you'd like a gentler syrup, or leave an ingredient out entirely. You'll get the most well-rounded cough and cold care from all three together, but each one is a capable immune ally on its own. A reader once stirred in a little cayenne and raved about the result, so there's plenty of room to play.

→ TRY THIS
If you're loving the way this flavor profile sounds, check out our Hibiscus Orange Fire Cider. It shares the same garlic and ginger backbone, with turmeric and a bright citrus and hibiscus finish.

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How to Make:
Immune-Building DIY Herbal Cough & Cold Syrup

This syrup scales up or down to suit your household. The size of your jar determines the quantities, and the amounts below are for a pint-sized jar.

Makes 1 pint-sized jar.

Ingredients:

1/2 cup onion, any variety, peeled & diced
1/2 cup garlic, peeled and diced
1/2 cup ginger, diced (peeling optional)
~ 1 cup raw honey

Directions:

Add the diced onion, garlic, and ginger to a 16 ounce glass jar and pack it down lightly. You should have about 1 inch of space left at the top. Add or remove a little as needed.
Pour the honey into the jar a little at a time. It can take a minute for the honey to find its way to the bottom, and a wooden chopstick helps by nudging it down and releasing air bubbles. Stop when the honey is about 1/2 inch from the top, then seal with a tight-fitting lid. Use a piece of tape to label and date your syrup.
Allow to sit at room temperature for a day, giving the jar a few turns upside down throughout the day to maximize the infusion.
Then, store your syrup in the refrigerator for up to 2 months. No need to strain out the solids. You can nibble on these when you take your spoonful of syrup. However, if you choose to strain, the onions, ginger, and garlic don't have to go to waste. Blend them into homemade dressings or marinades.

A few helpful tips: Take it with food. Raw onions and garlic on an empty stomach can be rough. You may not notice a thing, but some people get mild (and very temporary) stomach upset or nausea, and neither is pleasant even when short-lived. Instead of taking this first thing in the morning after fasting all night, try it after breakfast and with meals and snacks through the day. Everybody is different. And a cautionary note on raw honey: skip this syrup for children under one year old due to the risk of botulism.

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