What Is The Universal Edibility Test: How To Tell If A Plant Is Edible

Person Tasting A Leaf

Image by Terri Rosa Fox

Foraging is a fun way to enjoy the outdoors and still bring dinner home. There are many wild and native foods available in our forest, along streams and rivers, in mountain zones, and even in deserts. You just need to know what you are looking for to get a table full of nutritious goodies.

This is where the Universal Edible Plant Test comes into play. If you aren’t sure what your wild food is, you should test a plant’s edibility by following this guide.

How Does The Universal Edibility Test Work

What is the Universal Edibility Test and how does it work?
It is a very simple, but specific, plan to ID wild plants and ascertain their
safeness for eating. Basically, it is how to tell if a plant is edible. Does
the Universal Edibility Test work? It is a gradual and thorough introduction of
the new food that gives you a chance to check whether it is toxic or poisonous.
The introductions are small and slow, so the chances of a large reaction are
reduced.

The first part of testing a wild food is to divide it into
edible parts. If you know what the food might be you will know, for instance,
that the leaves and bulb of wild
onion
are edible. The berries
of wild brambles
and the flower
of a cattail
are all edible. Select healthy plant material free of damage
and insects.

Pick one part of the plant and smell it. Any detection of an almond scent should be avoided as should acidic or bitter smells. Now you are ready for skin and oral contact. Start with skin to determine if any topical allergy exists. Part of the Universal Edible Plant Test is to place the plant in your mouth, but first you should have tactile contact for 15 minutes followed by an observation period. You should wait eight hours after skin contact with the plant, during which time do not eat. If any allergic reaction occurs, do not place the plant in your mouth.

How to Tell if a Plant is Edible Through Oral Contact

Finally, we get to the potentially scary part, tasting the
plant. This requires several steps before the plant can be considered safe.
Place part of the plant around your mouth. Discontinue if any burning or
itching happens.

Next, place the plant on your tongue for 15 minutes but do
not chew. If all seems well, move to the next step. If nothing happens, chew
for 15 minutes but do not swallow. If everything seems good, swallow. Do not
eat the food again for eight hours. Drink plenty of filtered water during this
period.

Universal Edible Plant Test Reactions and What to Do

If at any time you feel nauseous after ingesting the plant,
drink a lot of purified water and induce vomiting followed by plenty more
water. Since the plant ingested was just a small amount, things should be fine
except in rare cases. If any oral discomfort occurs later, swish with water and
do not eat any more of the plant.

If nothing happens in eight hours, eat 1/4 cup (30 g.) of
the plant and wait an additional eight hours. If all seems well, the plant is
safe to ingest. This is an approved method to test plant edibility. The test
appears in many survival and prepper guides as well as university
publications
on wild foraging.

Disclaimer: The contents of this article is for
educational and gardening purposes only. Before using or ingesting ANY herb or
plant for medicinal purposes or otherwise, please consult a physician, medical
herbalist or other suitable professional for advice.

This article was last updated on 01/13/22

Read more about General Herb Care

Foraging is a fun way to enjoy the outdoors and still bring dinner home. There are many wild and native foods available in our forest, along streams and rivers, in mountain zones, and even in deserts. You just need to know what you are looking for to get a table full of nutritious goodies.

This is where the Universal Edible Plant Test comes into play. If you aren’t sure what your wild food is, you should test a plant’s edibility by following this guide.

How Does The Universal Edibility Test Work

What is the Universal Edibility Test and how does it work?
It is a very simple, but specific, plan to ID wild plants and ascertain their
safeness for eating. Basically, it is how to tell if a plant is edible. Does
the Universal Edibility Test work? It is a gradual and thorough introduction of
the new food that gives you a chance to check whether it is toxic or poisonous.
The introductions are small and slow, so the chances of a large reaction are
reduced.

The first part of testing a wild food is to divide it into
edible parts. If you know what the food might be you will know, for instance,
that the leaves and bulb of wild
onion
are edible. The berries
of wild brambles
and the flower
of a cattail
are all edible. Select healthy plant material free of damage
and insects.

Pick one part of the plant and smell it. Any detection of an almond scent should be avoided as should acidic or bitter smells. Now you are ready for skin and oral contact. Start with skin to determine if any topical allergy exists. Part of the Universal Edible Plant Test is to place the plant in your mouth, but first you should have tactile contact for 15 minutes followed by an observation period. You should wait eight hours after skin contact with the plant, during which time do not eat. If any allergic reaction occurs, do not place the plant in your mouth.

How to Tell if a Plant is Edible Through Oral Contact

Finally, we get to the potentially scary part, tasting the
plant. This requires several steps before the plant can be considered safe.
Place part of the plant around your mouth. Discontinue if any burning or
itching happens.

Next, place the plant on your tongue for 15 minutes but do
not chew. If all seems well, move to the next step. If nothing happens, chew
for 15 minutes but do not swallow. If everything seems good, swallow. Do not
eat the food again for eight hours. Drink plenty of filtered water during this
period.

Universal Edible Plant Test Reactions and What to Do

If at any time you feel nauseous after ingesting the plant,
drink a lot of purified water and induce vomiting followed by plenty more
water. Since the plant ingested was just a small amount, things should be fine
except in rare cases. If any oral discomfort occurs later, swish with water and
do not eat any more of the plant.

If nothing happens in eight hours, eat 1/4 cup (30 g.) of
the plant and wait an additional eight hours. If all seems well, the plant is
safe to ingest. This is an approved method to test plant edibility. The test
appears in many survival and prepper guides as well as university
publications
on wild foraging.

Disclaimer: The contents of this article is for
educational and gardening purposes only. Before using or ingesting ANY herb or
plant for medicinal purposes or otherwise, please consult a physician, medical
herbalist or other suitable professional for advice.

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