A lower-calorie way to make Roast potatoes
Roast potatoes: craggy crisp potatoes with rosemary and garlic
Parboiled potatoes are roughed up and roasted on a hot tray with measured rapeseed oil, at about 330 kcal per serving.
For Roast potatoes, control potato starch, vegetable moisture and measured fat, checking texture before each stage. Roast potatoes should taste recognisably Irish, hold its intended structure and leave no watery or greasy residue.
What changes—and what stays
From roasted in goose fat or abundant oil is often 470–620 kcal to 330 calories
Parboil and roughen for surface area, then use 24 g oil on a fully preheated tray. Rosemary, garlic, black pepper and deeply browned craggy edges deliver the roast flavour.
| Part | Conventional | Lighter | Why |
|---|---|---|---|
| Core method | More added fat or a heavier proportion | Parboil and roughen for surface area, then use 24 g oil on a fully preheated tray | Rosemary, garlic, black pepper and deeply browned craggy edges deliver the roast flavour. |
How the flavor stays
Rosemary, garlic, black pepper and deeply browned craggy edges deliver the roast flavour.
A cost rule that survives inflation
A hot tray and steam-dry technique create crispness without expensive animal fat.
Ingredients for 8
Measure first; timing is part of how this recipe uses less fat.
- 2.2 kgfloury potatoes
- 24 grapeseed oil
- 35 ggarlic
- 20 grosemary
- 12 gblack pepper
- 10 gmustard powder
- 2bay leaves
- 1lemon
Method
Each step includes heat, a visible cue, and a recovery.
Step 1 · follow the visible cue
Prepare and control moisture
Cut potatoes equally, rinse and parboil until the outer five millimetres soften.
Look for: Edges yield to a fork while centres remain firm.
Step 2 · follow the visible cue
Build the flavour base
Drain, steam-dry and shake in the pot with mustard until surfaces become craggy.
Look for: Potatoes look floury and rough with no wet sheen.
Step 3 · follow the visible cue
Cook with even heat
Turn once in measured oil on a smoking-hot tray, keeping pieces well spaced.
Look for: Undersides are deeply golden and release without sticking.
Step 4 · follow the visible cue
Rest and verify the finish
Add rosemary and garlic late, roast all sides crisp and finish with lemon zest.
Look for: Shells audibly crisp and centres are fluffy, not oily.
Calories at the same serving size
150 kcal · 31% lower estimated
The estimate uses the listed ingredients divided into 8 servings. Brand labels, trimming, and the amount left in the pan can change the result.
Keep the leftovers in the same spirit
Cool Roast potatoes within two hours, refrigerate airtight for up to three days and reheat only the portion needed.
Cool Roast potatoes within two hours, refrigerate airtight for up to three days and reheat only the portion needed.
Frequently asked questions
Can Roast potatoes be prepared a day ahead?
Yes. Cool moist and crisp components separately, then combine during gentle reheating or just before serving. Cool Roast potatoes within two hours, refrigerate airtight for up to three days and reheat only the portion needed.
What does the calorie estimate for Roast potatoes include?
One listed serving using only the measured ingredients; bread, sauces and extra toppings are excluded. Parboil and roughen for surface area, then use 24 g oil on a fully preheated tray.
- floury potatoes2.2 kg
- rapeseed oil24 g
- garlic35 g
- rosemary20 g
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Recipe development and nutrition review: CaloNote Editorial
This editorial recipe uses ingredient-level nutrition estimates and reviewed cooking principles. It is not represented as physically test-cooked, and nutrition is approximate.
Published and last reviewed: August 25, 2026
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