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“Natural Strawberry Flavor WONF.” You’ve seen it on a spec sheet. Most people move past it without a second thought.
Here’s what those four letters actually mean.
WONF stands for With Other Natural Flavors.
Under FDA regulations (21 CFR 101.22), it means the strawberry character is derived in part from actual strawberry, while other natural flavor ingredients are used to complete or reinforce the profile.
It sits in a spectrum every product developer should know:
🟢 FTNF (From The Named Fruit): all flavor constituents come from the named fruit
🟡 WONF (With Other Natural Flavors): contains flavor from the named fruit, supported by other natural sources
🟠 Type: all natural, but none of the flavor comes from the named fruit
🔴 Artificial: characterizing flavor is created with synthetic flavoring substances
So why do WONFs exist?
Because straight fruit-derived flavors can be expensive, crop-dependent, and variable from harvest to harvest. A WONF allows a flavorist to anchor the profile to the real fruit while supplementing with complementary natural sources that improve consistency, supply security, and cost-in-use.
The labeling implication many developers miss: a WONF can still appear as a natural strawberry flavor on an ingredient statement. Depending on the product and labeling approach, you may also see declarations such as “naturally flavored” or “naturally flavored with other natural flavors.”
Knowing the difference between FTNF, WONF, and Type changes how you write a brief, evaluate costs, manage sourcing risk, and make labeling claims. They’re not interchangeable terms, they represent different formulation and business decisions.
