South African Umngqusho: Samp and Sugar Beans
Umngqusho is a traditional Xhosa dish that has become a beloved food across many South African communities and is famously cited as former President Nelson Mandela's favourite dish. It is made from two core ingredients: samp and sugar beans. Samp (umngqusho in Xhosa — the word for the cracked maize kernels themselves, also used for the prepared dish) is dried maize/corn kernels that have been stamped or cracked in a wooden mortar, breaking the kernels into large irregular fragments without grinding them to flour. This produces a chunky, coarse grain rather than a fine flour — unlike ugali or sadza (made from maize flour), umngqusho retains the texture of distinct grain pieces that cook to a soft but still somewhat textured consistency. The sugar beans (small spotted beans — a variety of Phaseolus vulgaris) are soaked overnight and slow-cooked with the samp for three to five hours (or pressure-cooked for one hour) until everything is very tender and the dish forms a thick, cohesive mixture. Butter, salt, and sometimes onion are added. The result is a dense, starchy, savoury stew with a quite neutral flavour that is deeply satisfying and filling — the Xhosa equivalent of a complete grain-and-legume staple dish.
Samp Kernels on Carpet: Brush Out Before Amylase
Umngqusho behaves differently on carpet from both maize flour porridges (ugali, sadza, nsima) and from softer mashes (mukimo). The large, partially gelatinised samp kernel fragments — typically 3–8 mm in size — are chunky enough to lodge between individual carpet fibres rather than spreading as a uniform paste. The correct first step: use a stiff-bristled brush or spoon to physically work out as many individual samp kernel fragments as possible from between the carpet fibres. A standard blotting approach misses the kernel fragments that are trapped between fibres — they stay embedded while the surface is cleaned, then slowly break down and spread starch over subsequent days. After physical removal of as many samp kernel fragments as possible: apply a warm water cloth (50°C) for 3–4 minutes to rehydrate the remaining starch residue (from the outer surface of the samp kernels, which does gelatinise during cooking, and from the bean cooking liquid that coats the carpet). Then blot. Apply amylase enzyme for 20 minutes: this digests both the samp's partially gelatinised surface starch and the sugar bean starch from the dissolved bean fragments in the cooking liquid. Note: if the samp kernels were very thoroughly cooked (extremely soft — the centre starch is also fully gelatinised), the amylase step may need to be extended to 25 minutes.
Sugar Bean Pigments and Concentrated Cooking Liquid
The slow-cooked bean cooking liquid from umngqusho is one of the most concentrated staining liquids in this guide series. Unlike a fresh-cooked dish served immediately, umngqusho is cooked for several hours at a gentle simmer — during which the sugar bean seed coat pigments (anthocyanins from the pink-red areas of the bean skin, and condensed tannins from the brown areas) gradually leach into the cooking liquid, concentrating with each hour of cooking. The bean cooking liquid also contains dissolved bean starch, protein hydrolysis products (short peptides from the long cooking), and sucrose and oligosaccharides from the bean. When this concentrated liquid spills onto carpet, it soaks deeply and quickly. The treatment: (1) Cold water blotting immediately — removes the water-soluble anthocyanin fraction before it bonds to carpet fibres. Repeat cold water blotting 2–3 times. (2) After amylase and lipase steps are complete: hydrogen peroxide (3%) — 20 minutes (bleaches the remaining anthocyanin chromophores and the condensed tannin polyphenol compounds from the sugar bean skin). Note: this is a gentler treatment than kidney bean anthocyanins alone, because umngqusho's tannins require the peroxide in addition to cold water blotting (condensed tannins bond more strongly to carpet fibres than simple anthocyanins).
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South African Umngqusho on Carpet: Common Questions
What is the full treatment sequence for umngqusho on carpet?
(1) Use a stiff brush or spoon to work out samp kernel fragments from between carpet fibres — the key step unique to umngqusho. (2) Cold water blotting — 2–3 rounds (sugar bean anthocyanin in the bean cooking liquid; dilutes the concentrated cooking liquid). (3) Warm water cloth (50°C) over remaining starch residue — 3–4 minutes, blot. (4) Cornflour — 8 minutes, vacuum (butter fat if butter was used in the dish). (5) Amylase — 20–25 minutes, blot (samp starch and sugar bean starch). (6) Lipase — 10 minutes, blot (butter fat, releasing any butter beta-carotene). (7) Protease — 15 minutes, blot (sugar bean protein from dissolved bean fragments). (8) Hydrogen peroxide (3%) — 20 minutes, blot (sugar bean anthocyanin and tannin, Maillard browning from the long cooking, any butter beta-carotene). (9) Cold water rinse, blot dry. Fan-dry.
Why are samp kernels harder to remove from carpet than ugali or nsima?
Ugali, nsima, and sadza are made from finely ground maize flour that fully gelatinises when cooked, forming a uniform, smooth paste. When this paste falls on carpet, it forms a relatively uniform starchy deposit that can be removed by scooping (when warm and soft) or by warm water rehydration followed by scraping (when cold and hard). The starch distributes fairly evenly through the carpet pile surface. Samp kernels are irregular, coarse fragments (3–8 mm) that fall into and between the carpet fibres like small stones, lodging in the gaps where scooping and blotting cannot reach them. The kernel fragments have a gelatinised outer surface (from cooking) but a denser, partly starchy interior that holds its shape — they do not spread like maize flour paste and therefore resist being blotted or scraped away from between fibres. The stiff-brush approach is needed to physically dislodge them, in the same way a stiff brush is used to remove dried sand from carpet.
Is the pink-brown colour from the bean cooking liquid the same as kidney bean staining?
Similar but not identical. Kidney bean anthocyanins (from the dark red kidney bean seed coat) are typically more intensely red and at higher concentration than sugar bean anthocyanins (from the lighter, spotted sugar bean seed coat). Sugar beans have a more muted pink-brown staining liquid rather than the vivid red of kidney bean broth. The condensed tannin component in sugar bean skin also differs slightly from kidney bean — sugar beans have a higher proportion of condensed tannins (proanthocyanidins) relative to simple anthocyanins, which bonds more strongly to carpet fibres (tannins have a higher affinity for protein-based carpet fibres like wool). The peroxide step is therefore more important for sugar bean tannins than for kidney bean anthocyanins: cold water blotting removes the water-soluble anthocyanin fraction in both cases, but the tannin residue requires the peroxide step to be fully cleared.
What if the umngqusho also had pumpkin or potato added — a common variation?
Some South African umngqusho recipes include diced potato or diced pumpkin (butternut squash) added to the pot during cooking. For carpet treatment: (1) Potato: adds potato starch to the deposit — fully addressed by the same amylase step (potato amylose and amylopectin respond to amylase at the same contact time as samp starch). No additional treatment needed. (2) Pumpkin/butternut: adds pumpkin beta-carotene (a fat-soluble orange carotenoid — same family as palm oil beta-carotene but at much lower concentration since pumpkin is a water-based vegetable, not an oil). The pumpkin's beta-carotene is present in the dish at low concentration (diluted in the cooking water) and is addressed by the peroxide step without requiring additional lipase time. If the dish was made with a large amount of pumpkin and the stain is noticeably orange: extend the peroxide to 25 minutes or apply a second pass.