Ramjet and barrel: what they have in common

1. Step 1. Ramjet — uses — Kerosene. The fuel is kerosene.
2. Step 2. Kerosene — uses — Distillation. Obtained by distillation.
3. Step 3. Distillation — is used in — Ethanol. It is concentrated by distillation.
4. Step 4. Ethanol — uses — Fermentation. Alcohol is produced by fermentation.
5. Step 5. Fermentation — is used in — Brewing. Yeast ferments the sugars of the malt.
6. Step 6. Brewing — uses — Barrel. Beer and wine were stored and transported in barrels.

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