Salt and bellows: what they have in common

1. Step 1. Salt — is material for — Bread. Flavour and strengthening of the gluten.
2. Step 2. Bread — uses — Oven. Bread is baked in an oven.
3. Step 3. Oven — is made of — Clay. Baking ovens were shaped from clay.
4. Step 4. Clay — is material for — Bloomery. A bloomery is a clay shaft.
5. Step 5. Bloomery — has part — Bellows. Bellows blew in air for a high temperature.

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