Expressing Duration with niin kauan kuin
Use the conjunction phrase niin kauan kuin (as long as) to express that a condition remains true for a certain duration. When talking about food preservation, this pairs well with the verb säilyä (to stay fresh).
| The milk stays fresh in the fridge as long as it is cold. | Maito säilyy jääkaapissa niin kauan kuin se on kylmää. |
| The meat stays fresh in the freezer as long as you want. | Liha säilyy pakastimessa niin kauan kuin haluat. |
Expiration and Spoilage
You can also use niin kauan kuin with negative clauses to state that food remains safe as long as it hasn't expired, spoiled, or grown mold.
| The food is edible as long as the date is not past. | Ruoka on syömäkelpoista niin kauan kuin päiväys ei ole ohi. |
| The fish does not spoil as long as it does not turn warm. | Kala ei pilaannu niin kauan kuin se ei muutu lämpimäksi. |
| The apple is edible as long as there is no mold on it. | Omena on syömäkelpoinen niin kauan kuin siinä ei ole hometta. |
Safe Storage
Proper storage often requires an ilmatiivis rasia (airtight container). If you are unsure about a product, you can rely on your senses to haistaa (to smell) if the food has gone bad.
| Food storage is safe in an airtight container. | Ruoan säilytys on turvallista ilmatiiviissä rasiassa. |
| You can smell when the fish spoils. | Voit haistaa, kun kala pilaantuu. |
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