Spinach

Why spinach is rated low

Spinach comes in low at 1 cup raw (30g), and no individual FODMAP subgroup is recorded as raised at that serving, so there is no single sugar driving the rating up or down. That is the whole of the tested data: one rung, at one amount. It makes spinach one of the easiest leafy greens to work into a low FODMAP meal, but it also means larger helpings simply have not been tested here, so the honest reading is that 1 cup raw (30g) is supported and bigger amounts are unmeasured rather than proven fine.

What changes your risk

• The serving that was tested 1 cup raw (30g) is the only rung on the ladder. Low at that amount does not mean unlimited, and there is no published figure here for a larger bowl, so keep the portion recognisable rather than treating spinach as a free food.
• Stacking across the meal Spinach carries no recorded subgroup, so what matters is the total FODMAP load of everything on the plate. A salad built on 1 cup raw (30g) of spinach with several other low servings piled on top, all eaten at once, adds up even when each part is low on its own. Spreading servings through the day is gentler on the day's total than one large sitting.
• Wilting shrinks the volume, not the FODMAPs Heat does not break FODMAPs down, so a pan of spinach cooked down to a spoonful still carries what went into the pan. Cooked spinach is easy to underestimate because it collapses so far, and measuring the raw leaves before they hit the heat is the only reliable way to know what the serving was.
• Smoothies and juices concentrate it Blending does not lower FODMAP content, and a green smoothie or a juice can hold far more spinach than anyone would eat as leaves, with the fibre left behind in the case of juice. Treat a drink as several servings rather than one.
• What goes on it Creamed spinach, spinach dips and restaurant sides are usually built on onion, garlic and cream, and that is where the trouble tends to come from rather than the leaves. Garlic-infused oil, chives, lemon, salt and pepper give flavour without those ingredients.

What else works

Spinach is low at the tested serving, so the useful list is what else you can rotate through rather than what to replace it with. Baby spinach, bok choy, cucumber, bell pepper, carrot, zucchini and green beans all work as salad or stir-fry bulk and are safe to lean on. Where people slip is assuming anything green or anything in a mixed bag behaves the same way. Leek bulb and the white part of spring onion are not low FODMAP swaps at ordinary amounts, and neither is celery, so a mixed salad or a soup base that leans on them is a different proposition from a bowl of leaves. The green leaves of leeks and the green tops of spring onions are the parts that work.

How to keep it low

Buy spinach loose or in a bag and measure 1 cup raw (30g) into the bowl rather than grabbing from the bag, since leaves compress and it is easy to double a serving without noticing. Store it dry in the fridge with a paper towel in the container, because wet leaves collapse fast and limp spinach tends to get used in bigger quantities to make up the volume. If you are cooking it, portion the raw leaves first and then wilt them, so you still know what the serving was after it shrinks. For dressings and sauces, build them yourself from oil, lemon, vinegar, herbs and hard cheese such as parmesan, and check any bottled dressing or stock for onion and garlic before it goes near the bowl.

Common questions

how much spinach is low fodmap

1 cup raw (30g) is the tested low serving. That is the only amount with published data here, so larger helpings are untested rather than confirmed.

can i eat spinach on the elimination phase

Yes, at 1 cup raw (30g), which the data records as low. Keep it to a measured serving rather than treating it as unlimited, and remember what is cooked into it counts too.

does cooking spinach reduce fodmaps

No. Heat does not destroy FODMAPs, and wilted spinach carries what the raw leaves carried even though it shrinks dramatically. Measure the leaves before cooking.

is a spinach smoothie low fodmap

Blending does not lower FODMAP content, and a smoothie usually holds well over 1 cup raw (30g) of leaves plus whatever fruit goes in with it, so it is not equivalent to a measured serving.