Why You Should Order Only Large Fries at McDonald’s

The Science, Economics, and Pure Joy Behind the Ultimate Fast-Food Upgrade

Who doesn’t love a good serving of French fries? They’re crispy, golden, salty, and downright addictive. If you’ve ever found yourself staring at the drive-thru menu, pondering whether to order small, medium, or large fries, you’re not alone. It’s a universal fast-food dilemma.

But what if the answer was already solved by science?

Today, we’re diving into the delicious world of French fry economics. Thanks to a fascinating deep-dive by the YouTubers at The Food Theorists, we now have hard data to settle the great fry debate. Armed with digital scales, a hunger for knowledge (and fries, of course), they embarked on a fry-tasting adventure spanning four different fast-food chains across three distinct cities.

Their mission? To uncover the exact weight, volume, and value of every fry size. And the findings might just change the way you order forever.

📋 The Great Fry Debate: Quick Reference Guide

Detail	The Findings
The Study	The Food Theorists weighed fry orders across 4 major chains in 3 cities.
Best Overall Value	Large McDonald’s Fries. They offer the highest weight-to-price ratio.
Best Container Packing	Small Fries. They act like "Tetris masters," filling every nook and cranny with minimal air gaps.
Best Texture Balance	Large McDonald’s Fries. They hit the perfect sweet spot of crispy exterior and fluffy interior.
The Verdict	Go big or go home. Large fries offer the most delicious, golden goodness for your buck.

💡 Key Insight: While small fries are geometrically efficient at filling a box, the large fry remains the undisputed champion of overall value, volume, and the perfect crispy-to-fluffy texture ratio.

🔬 The Science of the Fry: What the Data Reveals

When it comes to fast food, we all want to feel like we’re getting a good deal. The Food Theorists broke down the nitty-gritty of fry economics, sampling everything from classic shoestring and thick-cut fries to waffle and curly fries. Here is what they discovered:

1. The Economics: The Weight-to-Price Ratio

When the scales were balanced against the register receipts, the large McDonald’s fry reigned supreme. If you are all about getting the most actual potato for your hard-earned money, the big boys are the way to go. The price jump from medium to large is proportionally much smaller than the actual increase in fry weight you receive. You get significantly more delicious, golden goodness without breaking the bank.