Goron Tula (Gorontula): What It Is, Its Names, Where It Grows and How Nigerians Use It
Goron tula, often written as one word, gorontula, is the dried fruit of Azanza garckeana, a savanna tree best known in Nigeria from Tula in Gombe State. The name is Hausa for "the kola of Tula", because the fruit is chewed slowly like kola nut. In English it is called snot apple, African chewing gum or silky kola, after its sweet, sticky, stringy pulp. Nigerians buy it as whole dried fruit, as a home-made syrup, and increasingly as a powder. Below is what the fruit actually is, every name it goes by, where it grows, what is in it, and how people use it, with honest notes on what the science does and doesn't show.
What goron tula is
Azanza garckeana (you will also see the newer botanical name Thespesia garckeana) is a small to medium tree in the hibiscus and cotton family. Its fruit is a hard, woody, slightly hairy capsule about 2.5 to 4 cm across, split into five segments. Each segment holds one hard seed about a centimetre long, surrounded by sweet, glue-like pulp. When you chew it, the pulp turns into a sticky, stringy mucilage, which is where "snot apple" and "chewing gum" come from. The taste is sweet and a little like mango. The fruit keeps well on the tree and is usually dried for storage, which is why most of what you buy is dry and brown.
Goron tula in English, Hausa and other languages
- Hausa: goron Tula, "kola of Tula". Also written gorontula and goron tula.
- English: snot apple, African chewing gum, silky kola (a trade name), tree hibiscus or wild hibiscus, azanza.
- Botanical: Azanza garckeana, synonym Thespesia garckeana, family Malvaceae.
- Elsewhere in Africa: morojwa (Tswana), mutohwe (Shona), mtobo (Swahili), snotappel (Afrikaans), jakjak (Sudan).
- Yoruba and Igbo: there is no established traditional name, because the tree is not native to southern Nigeria. Names you see online for it in Yoruba or Igbo are recent descriptions, not traditional names. If a seller gives you one, treat it as marketing.
Where goron tula grows
The tree is native to a wide belt of dry Africa, from Sudan down to Kenya, Tanzania, Zambia, Zimbabwe, Botswana and South Africa. In Nigeria it is most associated with Tula, in Kaltungo Local Government Area of Gombe State, where it is semi-cultivated and where most of the fruit sold in Nigerian markets comes from. It is also reported around Michika in Adamawa and in parts of Katsina. The common claim that it "grows only in Tula" is an exaggeration, but Tula is the recognised Nigerian source, and "sourced from Tula, Gombe" is a fair thing to look for when you buy.
What is in the fruit
Several Nigerian and African laboratories have analysed the pulp. The numbers vary a lot between studies, because samples, ripeness and methods differ, so treat these as ranges:
- Carbohydrates: roughly 35 to 57% of the dry pulp. One Sudanese analysis found about half the dry weight is sugar (glucose, fructose and maltose). It is a sweet fruit.
- Fibre: high, with reported values ranging widely from about 7% to 45%.
- Protein: about 9 to 12%. Fat: low, about 1 to 6%.
- Vitamin C is present. Minerals: potassium, magnesium, calcium, iron and manganese.
- Plant compounds: phenolics and tannins, with flavonoids reported in some studies and not others. Oxalates have also been reported.
A simple way to think of it: a sweet, fibrous, mineral-rich dried fruit, more like dates than like a medicine.
How Nigerians use goron tula
- Chewed: the classic way. The fruit is chewed slowly, the pulp swallowed and the hard seed spat out.
- Soaked: dried fruit is soaked in warm water (or milk) until the pulp turns slimy. The water is drunk and the pulp eaten.
- Syrup: softened fruit is boiled with dates, cloves, ginger or cinnamon, strained and sweetened with honey. See how to prepare gorontula syrup.
- Powder: the dried pulp ground fine, stirred into pap, milk, yoghurt or smoothies, or used to make syrup without the soaking and pounding. See goron tula powder.
Full instructions for the fruit are in how to prepare goron tula fruit.
What goron tula is used for, honestly
Traditionally the fruit is eaten as a snack and as a tonic, and in Nigeria it is sold mainly for fertility and sexual health in women and men. The reality of the evidence is simple: there are no human studies at all. There are small animal studies (rats and rabbits) and lab tests, which are interesting but not proof. The strongest online claims, such as "tightening", "washing the womb", curing infertility, shrinking fibroids or curing cancer, have no evidence behind them. We go through the research carefully in gorontula benefits: what the evidence says, with separate guides for women and men.
Three things to know before you buy
- It is very sweet. About half of the dry pulp is sugar, so people managing blood sugar should treat it as a sweet, not a supplement.
- Badly dried fruit can grow mould. A market survey in Zambia found this fruit often carried aflatoxin (a mould toxin) above legal limits, and in lab tests it grew mould toxin more readily than any other wild fruit tested. Buy properly dried, sealed fruit or powder, and throw away anything split, musty or discoloured. See how to store goron tula and spot bad fruit.
- It is not for pregnancy or breastfeeding. There is no safety data, and parts of the plant have traditionally been used to start labour. Full cautions are in gorontula side effects.
Frequently asked questions
What is goron tula called in English?
Snot apple, African chewing gum or silky kola. The botanical name is Azanza garckeana.
Is gorontula the same as goron tula?
Yes. Gorontula is simply the one-word spelling of the Hausa name goron Tula, "kola of Tula".
What does goron tula taste like?
Sweet, a little like mango, with a sticky, stringy, gum-like texture when chewed.
Where does goron tula come from in Nigeria?
Mainly Tula in Kaltungo, Gombe State, with some from Adamawa and Katsina. The tree also grows across eastern and southern Africa.
Is goron tula a fruit or a nut?
A fruit. It is called "kola" only because it is chewed slowly like kola nut. The hard seeds inside are not eaten.
Bottom line: Goron tula (gorontula, snot apple, Azanza garckeana) is a sweet, sticky dried fruit from Tula, Gombe, chewed like kola and used across Nigeria for fertility and vitality. It has no traditional Yoruba or Igbo name, no human studies behind its health claims, and a real mould risk when badly dried, which is why properly dried, sealed fruit or powder is the form to buy.