Olive Oil & Lactose-Free Milk Mashed Potato
Soft, creamy and easy to digest: this lactose-free, olive oil mash is as kind to your gut as it is comforting on the plate.
Ingredients
- 1 kg floury potatoes (such as Maris Piper or King Edward)
- 150 ml lactose-free milk (or unsweetened plain plant-based milk, such as rice or certified gluten-free oat milk)
- 60 ml extra virgin olive oil
- 1 small pinch of freshly grated nutmeg
- 1 tsp fine salt (adjust to taste)
- Freshly ground black pepper, to taste
- 1 tbsp freshly snipped chives (optional, to serve)
Instructions
Preparation Steps
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Peel and cut the potatoes into even chunks of roughly 4 cm. Keeping them a uniform size ensures they cook evenly, preventing some pieces from overcooking — which would compromise both their texture and nutritional value — whilst others remain underdone.
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Rinse the chunks under cold running water to remove excess surface starch. This simple step helps produce a lighter, less gluey mash that is gentler and easier to digest for sensitive guts.
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Steam the potatoes for 20 to 25 minutes, until a fork slides through without any resistance. Steaming is preferable to boiling in water: it preserves more minerals (potassium, magnesium) and water-soluble vitamins, and maintains an optimal level of resistant starch, which is beneficial for the gut microbiome.
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Gently warm the lactose-free milk in a small saucepan over a low heat — do not bring it to the boil. Using warm milk allows you to incorporate it without dropping the temperature of the mash, ensuring a smooth, even texture and avoiding the need to overwork the mixture, which would make it gluey and harder to digest.
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Mash the potatoes while they are still piping hot, using a manual potato masher or a food mill. Avoid a blender or food processor at all costs: these release too much starch and result in a sticky, gluey texture. Work the potatoes gently and do not overdo it.
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Stir in the olive oil in a slow, steady drizzle, mixing gently with a spatula or wooden spoon. Extra virgin olive oil contributes polyphenols — including oleocanthal and hydroxytyrosol — which have well-recognised anti-inflammatory properties, making this particularly beneficial for people with irritable bowel syndrome or low-grade intestinal inflammation.
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Add the warm milk one spoonful at a time, stirring gently between each addition, until you reach your desired consistency. You may not need all of the milk: the ideal texture is soft and creamy, but not runny.
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Season with the salt, freshly ground black pepper, and grated nutmeg. Taste and adjust to your preference. Used in small quantities, nutmeg is traditionally associated with supporting digestion and reducing bloating.
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Serve immediately, spooned into warmed bowls or deep plates, with a light drizzle of extra virgin olive oil and freshly snipped chives. In moderate amounts, chives are well tolerated on a low-FODMAP diet and add freshness and flavour without aggravating the gut.
💡 Gut-Friendly Tips
Resistant starch & the microbiome: Allowing your mash to cool slightly before serving — or storing it in the fridge overnight — increases its content of type RS3 resistant starch. This starch behaves like a prebiotic fibre: it feeds beneficial bacteria in the colon (particularly Bifidobacterium and Lactobacillus) and encourages the production of short-chain fatty acids (SCFAs), which are essential to the health of the intestinal lining.
Low-FODMAP compatibility: This recipe is naturally low in FODMAPs, provided you stick to appropriate portion sizes (200–250 g of potato per person) and use a lactose-free milk or a low-fermentable plant-based alternative. It is suitable for people in the elimination phase of the low-FODMAP protocol.
No garlic or onion: The recipe deliberately contains neither garlic nor onion, both of which are major sources of fructo-oligosaccharides (FOS) and fructans — compounds frequently poorly tolerated in cases of IBS. If you'd like a more aromatic flavour, add a small sprig of fresh rosemary to the milk as it warms, then remove it before incorporating the milk into the mash: you'll achieve a subtle fragrance without the digestive drawbacks.
Storage: Keeps for up to 2 days in the fridge in an airtight container. Reheat gently in a saucepan with a splash of lactose-free milk to restore a smooth, creamy texture.