What “Natural Flavor” Legally Means
What “Natural Flavor” Legally Means
Under U.S. FDA rules, natural flavor can be any flavor derived from:
• plants
• fruits or vegetables
• herbs or spices
• meat, fish, poultry
• fermentation products
However, the original source is often heavily processed in a lab before it becomes a flavor ingredient.
A “natural flavor” mixture can contain dozens to hundreds of chemicals, but companies only have to list “natural flavor” on the label.
Potential Concerns
1. Chemical Processing
Even when derived from plants, the flavor compounds are typically extracted using:
• solvents (hexane, ethanol, propylene glycol)
• enzymatic processing
• heat and chemical reactions
The final ingredient may be far removed from the original food.
2. Hidden Additives
Natural flavor blends may include:
• preservatives
• stabilizers
• emulsifiers
• carriers (like maltodextrin or propylene glycol)
These don’t always appear on the label if considered part of the flavor system.
3. MSG-Like Compounds
Some natural flavors contain free glutamates or similar compounds that act like MSG.
These may be hidden in:
• yeast extract
• hydrolyzed proteins
• fermented ingredients
Sensitive individuals sometimes report headaches or neurological symptoms.
4. Ultra-Processing of Food
Natural flavors are commonly used to restore flavor lost during heavy processing.
Examples:
• flavored yogurt
• plant milks
• protein bars
• chips
• processed sauces
In many cases they encourage overeating by making foods hyper-palatable.
5. Lack of Transparency
Companies can legally keep formulas proprietary.
So two products labeled “natural flavor” could contain completely different compounds.
What to Ask Companies
When you contact companies, ask very specific questions. Most brands won’t volunteer details unless asked.
Here are the most useful questions.
Ingredient Source
• What exact ingredients are used to make the natural flavor?
• Is it derived from a single whole food or multiple sources?
• Is the flavor derived from the named ingredient in the product?
Example:
• “Is the strawberry natural flavor derived entirely from strawberries?”
Processing Methods
• How is the flavor extracted or produced?
• Are chemical solvents used in the process?
• Are there synthetic processing aids?
Carriers and Additives
Ask if the natural flavor contains:
• propylene glycol
• maltodextrin
• preservatives
• emulsifiers
• glycerin
These are very common.
Hidden Glutamates
Ask:
• Does the flavor contain yeast extract, hydrolyzed proteins, or free glutamic acid?
Organic Standards
If the product is organic:
• Is the flavor certified organic?
• Does it meet NOSB organic flavor rules?
Even organic foods can contain natural flavors that are not fully organic.
Best Case vs Worst Case
Best case natural flavor
• single ingredient extract
• steam distilled
• no solvents
• no carriers
Example:
Steam-distilled lemon oil.
Worst case natural flavor
• mixture of dozens of isolated compounds
• solvent extracted
• includes carriers and stabilizers
• used to mask processed food
Foods Where Natural Flavor Is Usually Safe
Some products tend to use simpler flavors:
• sparkling water
• teas
• simple sauces
• small organic brands
But it still depends on the company.
A Simple Rule Many Whole-Food Advocates Use
If a product lists natural flavor but no real version of that food, it’s usually a red flag.
Example:
• strawberry yogurt with no strawberries
Brands with the cleanest standards usually:
• disclose the flavor source
• say “organic vanilla extract”
• say “lemon oil”
• avoid generic “natural flavor”
For once in a while treats (like 3 times a year, it’s not a hard rule for me) for my older children. Ideally I would have none, but it’s a little tougher as my kids get older. I teach my children about artificial dyes and natural flavors so they can try to make the best decision based on what they are around (ie a party, event etc). When they are young, I use a hard no rule and it just makes it easier for us and there are no arguments. And no they don’t feel like they are missing out.