Read the grain first
Before you cut, look. The grain is the direction muscle fibres run — parallel lines through the meat. In a flank steak or skirt, they're obvious. In a chicken breast, subtler.
Against the grain means your knife cuts perpendicular to those lines. With the grain means it runs parallel.
What happens inside
Muscle fibres are long. Cut with the grain and each bite contains fibres 5–8 cm long. You chew, but they don't break — they drag. That's the tough sensation.
Cut against the grain and those same fibres are now 5–8 mm long. They break on the first bite. Same piece of meat. Entirely different texture.
The rule by cut
| Cut | Notes |
|---|---|
| Flank / skirt | Grain is obvious. Slice on a steep angle for wider pieces. |
| Brisket | Grain runs the length of the flat. Slice with the grain and it's nearly inedible. |
| Tri-tip | Grain changes direction mid-piece. Split in half first, then slice each half against its own grain. |
| Chicken breast | Grain runs lengthwise. Against the grain means slicing across the width. |
| Pork tenderloin | Medallions are naturally against the grain. |
How to slice
Rest the meat first — 5 minutes minimum for a steak, 15 for a roast. Then:
- Identify the grain direction.
- Rotate the meat so your knife travels perpendicular to it.
- One smooth pull. Don't saw.
- Aim for 6–8 mm thick. Thinner for tougher cuts like flank.
The quick test
Tear a small piece by hand. It pulls apart along the grain naturally. Now you know which way not to cut.
