The “Glass” Texture Goal

You know the texture I’m talking about. You bite into a roast potato. The outside shatters like a pane of glass—a deafening crunch. The inside is like a cloud of pure, fluffy mash. It is the holy grail of Sunday lunch.

Now, compare that to the average pub roast potato: A leathery, chewy skin with a waxy, translucent centre. It tastes of oil and disappointment.

The difference isn’t usually the oven temperature (though that matters). The difference is the tuber. If you are buying “General Purpose Whites” or “Washed Whites” from your veg supplier because they are £2 cheaper a sack, you have already lost the battle. You cannot roast a waxy potato. It defies the laws of chemistry.

To win the Sunday Roast war, you need to choose your weapon: The King Edward or The Maris Piper. But which one survives the brutality of a commercial kitchen?

The Philosophy: Engineering the Maillard Reaction

Rory Sutherland would tell you that the roast potato is a “Peak-End” moment. It is often the last thing people eat on the plate (saving the best for last). If the last bite is chewy, the whole meal is rated lower in their memory.

We are looking for Dry Matter. Water is the enemy of crispiness. We want a potato with high starch content and low water content. When the starch hits hot fat, it gelatinizes and then dehydrates to form that crust.

• Waxy Potato: Low starch, high water. Result: Greasy, chewy.
• Floury Potato: High starch, low water. Result: Crispy, fluffy.

But here is the trade-off: High starch potatoes fall apart. In a busy kitchen, “falling apart” means “waste.”

The Tactics: The Commercial Showdown

Here is the breakdown of the two heavyweights for your specific operation.

1. The King Edward: The High-Risk, High-Reward Diva

• The Pro: This is the “Fluff King.” It has the highest dry matter content. If treated with love, it produces the absolute best roast potato known to man. It explodes into fluff.
• The Con: It is fragile. If you par-boil King Edwards in a commercial steamer and leave them for 30 seconds too long, they turn to soup. They disintegrate in the colander.
• Verdict: Only for Gastropubs doing under 60 covers where the chef can watch the pot like a hawk. Too risky for high volume.

2. The Maris Piper: The Reliable Workhorse

• The Pro: It has high dry matter (crispy) but a slightly firmer structure than the Edward. It can take a beating. You can par-boil it, rough it up, and throw it in a tray, and it will hold its shape while still crisping up.
• The Con: It doesn’t get quite as fluffy as the Edward, but it’s 95% there.
• Verdict: The Winner for Pubs. It provides the consistency you need when doing 150+ covers.

3. The “Rough Up” Protocol (Crucial) It doesn’t matter which potato you buy if you don’t “Chuff” them.

• The Tactic: After par-boiling/steaming, drain the water. Let them steam dry for 5 minutes (remove moisture).
• Then, shake the colander violently. You want to bruise the edges. You want the potatoes to look fuzzy.
• Those fuzzy bits of broken starch are what catch the fat and create the crunch. Smooth potatoes = Chewy potatoes.

4. The Fat Choice Vegetable Oil is cheap. It is also flavorless.

• The Tactic: Beef Dripping or Goose Fat.
• If you can’t afford 100% dripping, do a 50/50 mix with Rapeseed oil.
• The Rule: The fat must be smoking hot (200°C) before the potato touches it. If the fat is cold, the potato drinks it. If the fat is hot, the potato sears.

The Software Pitch: The Potato Spec

The problem in most kitchens isn’t just the potato variety; it’s the quantity ordering. Chefs order “3 sacks of Pipers” because that’s what they always order. But Pipers are more expensive than “General Whites.”

If you are buying premium potatoes, you cannot afford to throw them away.

You need the Roast Forecaster.

This tool helps you calculate the ROI on your potato choice.

• Input the cost of your Maris Piper sack vs. General Whites.
• It tracks your portion yield.
• It tells you: “Yes, the Pipers cost £4 more per sack, but because you are selling more sides (due to quality), the profit margin is higher.”

It also stops over-ordering. Premium potatoes rot if stored too long. The tool tells you exactly what to order for the booked covers, keeping your stock fresh and your cash flow healthy.

👉 Get the tool here: https://smartpubtools.com/sunday-roast-forecaster/

The Conclusion

Don’t be the landlord who saves £2 on a sack of potatoes and loses £2,000 in repeat custom. Buy the Maris Piper. Steam dry them. Rough them up. Serve a potato that sounds like breaking glass, and they will forgive you for charging £21.