Short answer: spinach is one of the most alkaline-forming foods there is — and it is not on Dr. Sebi’s approved list. Below: the measurements, where the guide places it, one health consideration worth knowing about spinach regardless of how you eat, and the approved greens that take its place in the pan.
The numbers
Cooked spinach measures around pH 6.60 to 6.80, close to neutral. Raw runs a little lower.
Its PRAL is −14.0. For scale: broccoli is −1.2, kale is −8.3, cucumber is −0.8. That figure is driven by an unusually high potassium and magnesium content.
Is spinach Dr. Sebi approved?
No. It appears on no reproduction of the approved list and is commonly named among vegetables to avoid.
No itemised reason is published for spinach specifically. Like sweet potato and garlic, it sits outside the list under the closed-list rule rather than by any stated argument: the guide names what is in, and what is not named is out.
Oxalates, and why they matter either way
There is one health consideration attached to spinach that is worth knowing whichever way you eat. Spinach is high in oxalates, which matter if you are prone to calcium-oxalate kidney stones. That is a specific, evidenced consideration worth raising with a doctor — and it applies whether or not you follow Dr. Sebi. If you have had a stone, or been told you are at risk of one, this is a conversation to have rather than a decision to make from a food list.
Cooking reduces the oxalate load somewhat. Boiling does more than steaming, because a good share of the oxalate leaches into the water, which is then poured away. Among the approved greens, amaranth is also relatively high in oxalates, while kale, watercress, turnip greens and purslane are considerably lower, so those are the ones to lean on if oxalates are a concern for you.
Cooking the approved greens well
Spinach has two qualities people miss: it wilts almost instantly, and it is mild enough to disappear into anything. The approved greens behave differently, and a few adjustments cover the difference.
They cook down less, but they still cook down. A pound of raw spinach collapses to about a cup. Kale collapses less dramatically — roughly three cups raw to one cup cooked — so buy about half the volume you would of spinach for the same finished plate. Callaloo sits between the two.
They need more time. Where spinach wants thirty to sixty seconds, kale wants five to eight minutes steamed, callaloo four to five, turnip greens eight to ten, and watercress about a minute. Undercooked kale is tough and squeaky; the test is a leaf that folds limply over the edge of a spoon.
They are stronger in flavour. Turnip and dandelion greens are frankly bitter, and callaloo is earthier than spinach. Acid is the fix: a squeeze of key lime at the end, not at the start. Onion cooked slowly first gives sweetness that balances the bitterness, and a little olive or grapeseed oil stirred in off the heat rounds it out.
They carry more grit. Bunched greens, especially callaloo and turnip greens, hold soil in the crease of the stem. Fill a bowl with cold water, submerge the leaves, swish and lift them out rather than pouring the bowl off — the grit stays at the bottom. Repeat until the water runs clear, which is usually twice.
What to use instead
- Amaranth greens (callaloo) — approved, the closest match cooked, silky and mild once it softens. Sold bunched in Caribbean and West African shops, often far cheaper than supermarket bagged greens.
- Kale — approved, sturdier, strongly alkaline-forming in its own right at a PRAL of about −8.3. Strip the leaf from the stem and tear rather than chop.
- Watercress — approved, peppery, and the fastest of the group. Good raw where you would have used baby spinach in a salad.
- Turnip greens and purslane — both approved and both leafy. Purslane is succulent and slightly lemony, and is excellent raw.
How to use it
A working portion is one to two cups of cooked greens per person, which is two to four large handfuls raw. If you are shopping for a week, two or three bunches bought midweek beat one big shop on Sunday, since leafy greens rarely hold more than four or five days.
Store them unwashed, loosely wrapped in a damp cloth inside a bag in the crisper. Wash immediately before cooking. To keep a glut, blanch for two minutes, cool in cold water, squeeze the water out hard and freeze in handful-sized portions; they drop straight from the freezer into a pot.
The simplest reliable method: soften a sliced onion in a wide pan, add the washed greens with only the water clinging to them, cover for a few minutes, uncover to let the moisture cook off, then season with sea salt, cayenne, oregano or basil, and finish with key lime and a spoon of oil off the heat. Cooked greens keep three days in the fridge and reheat better than they have any right to.
This is food, not a treatment for any condition. If you have symptoms or a diagnosis, see your doctor — eating well sits alongside medical care, not instead of it.
Common questions
Is spinach acidic?
No. It is near-neutral as a food and strongly alkaline-forming after digestion, at a PRAL of about −14.0.
Why is spinach excluded?
It is not named on the list, and the list is closed. No published reasoning addresses it directly.
Does cooking change it?
Cooking reduces oxalate content somewhat and concentrates the minerals. The direction of the PRAL does not change.
Is callaloo the same as spinach?
No — callaloo is amaranth, a different plant entirely, though it is often sold and cooked in similar ways. It is softer and earthier cooked, and it takes a few minutes longer.
Can I eat the stems?
Kale and callaloo stems are both usable if you slice them thin and start them two or three minutes before the leaves. Turnip green stems are tougher and are better left out.
Related
- Is avocado alkaline or acidic?
- Is rice alkaline or acidic?
- Is broccoli alkaline, and why isn’t it approved?
- Are mushrooms alkaline or acidic?
- The complete approved food list
Surprised by an exclusion? The Ackaline app scans any food and tells you whether it’s approved — free to download. The full list with the reasoning is in The Alkaline Healing Blueprint.
For education, not medical advice. Talk to your doctor before making significant changes to how you eat.
