Burger Physics
Grind Chemistry & Smash Dynamics
The Physics of Burger Shrinkage: 80/20 vs. 70/30 vs. 90/10
When a raw burger patty hits high heat, shrinkage occurs along two distinct vectors: diameter contraction (horizontal diameter shrinking by 15% to 25%) and caloric mass reduction (rendering 20% to 35% of total raw weight). The fat ratio dictates this contraction:
90/10 (Ultra-Lean)
Minimal fat loss (~15% total weight loss), but high protein density causes rapid moisture expulsion. Prone to dry, crumbly texture if cooked past medium.
80/20 (The Gold Standard)
Optimal balance: ~25% total weight loss. Intramuscular fat melts into muscle fibers, creating juicy burgers with rich crust caramelization.
70/30 (High-Fat Blend)
Massive shrinkage (~35% to 40% weight loss). Excessive grease pools can cause flare-ups on open grills, but ideal for ultra-thin crispy smash burgers.
Artisanal Burger Grind
The Ultimate Burger: 100% Grass-Fed Regenerative Beef Grind
Commercial supermarket burger meat uses scrap trimmings from hundreds of feedlot cattle treated with chemical washes. True Nature Meats 100% Grass-Fed Burger Grinds are crafted exclusively from premium whole-muscle cuts (chuck, brisket, and short rib trim). When smashed on a blistering 450°F cast iron skillet, pure grass-fed tallow caramelizes into an explosive, crunchy lacy crust.
Grind Source
Whole Chuck & Brisket
Crust Chemistry
Superior Maillard Sear
Purity Standard
Zero Fillers or Sprays
Patty Dynamics
Smash Burgers vs. Thick Pub-Style Burgers
Crispy Smash Patty (2.5–3.5 oz)
Smashed flat with parchment paper onto a 450°F surface in the first 30 seconds. Maximizes surface-area-to-mass ratio, creating a crunchy, caramelized edge within 90 seconds without drying the interior.
Thick Pub Burger (6.0–8.0 oz)
Requires gentle shaping with a center thumb dimple to prevent doming. Cooked over two-zone heat to 135°F medium-rare core for edge-to-edge pink juiciness.
The 4 Golden Rules of Elite Burger Crafting
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1
Keep Meat Cold Until Cooking: Warm ground beef fat smears into the muscle fibers during handling. Keep ground beef ice-cold until it touches the hot pan.
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2
Never Salt Ahead of Time: Mixing salt into ground beef dissolves myosin, turning the texture rubbery and sausage-like. Always salt the exterior immediately before grilling.
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3
The Center Thumb Dimple: For thick patties, press a 1/2-inch indentation in the center. As outer edges shrink, the dimple expands, resulting in a perfectly flat patty instead of a dome.
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4
Only Smash in the First 30 Seconds: Smashes after meat proteins begin cooking expels liquefied juices and dries out the burger.
Frequently Asked Questions
Why do burger patties shrink smaller than burger buns?
Meat contracts by ~20% in diameter as proteins tighten. Always shape raw patties approximately 1/2 inch to 3/4 inch wider than your burger buns so they fit edge-to-edge after cooking.
What is the best pan for smash burgers?
A heavy cast iron skillet or flat carbon steel plancha. Their immense thermal mass maintains 450°F+ surface heat when cold meat touches them, creating instant Maillard crust.
Elevate Your Burger Game
Get 100% grass-fed, regenerative beef grinds for the crispiest smash burgers and juiciest pub patties you've ever tasted.
Shop Grass-Fed Ground Beef