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Flank Steak with Onions

A slow-baked flank steak layered with sliced onions, salt pork, and water.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Onion and pork are a kitchen classic. They rank in the top 10% of all ingredient pairs, and cooks put them together in 18,214 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Flank Steak with Onions

Oven, in the book's wordsA slow oven

Ingredients

Directions

The book says “a slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.

Prepare

  1. Preheat the oven to 300°F (150°C).

  2. Place the flank steak in a casserole dish.

  3. Season the sliced onions with coarse sea salt and black pepper.

  4. Cover the flank steak with the seasoned onions.

  5. Layer thin slices of salt pork over the onions.

  6. Add 1 cup of water to the casserole.

  7. Cover the dish tightly.

Bake

  1. Bake for 3 to 4 hours.

Recipe from a historical cookbook (Internet Archive).

Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.

  1. Onion + porktop 10% of all pairs
    Smell alikemoderate
    Cooked together18,214 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  2. Onion + peppertop 11% of all pairs
    Smell alikemoderate
    Cooked together68,474 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  3. Pepper + porktop 16% of all pairs
    Smell alikemoderate
    Cooked together22,121 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Flank steak
Forms the main body of the dish and becomes tender during long, slow cooking.
Onions
Soften and sweeten as they cook, adding moisture and flavour to the steak.
Salt pork
Adds fat and savoury flavour that melts slowly over the steak and onions.

The step that matters

Cover the dish tightly. A tight seal traps steam so the meat braises in its own moisture and the water. A loose cover lets liquid escape, which can leave the steak dry and tough.

Swap the onion

How well each one fits the dish's main ingredients (pepper, pork):

  1. Capsicumfits better
  2. Potatofits better
  3. Tomatofits better
  4. Onionthe original

Fit is the average pairing score against pepper, pork. Candidates are from the same food group and used in at least 100 recipes.

“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.

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