After an egg is laid, the liquid which it contains begins to evaporate through the pores of the shell and, as this continues, a noticeable space is left inside.
(1) Shake the egg, holding it near the ear. If the contents rattle, it is somewhat stale.
(2) Drop the egg in cold water. If it sinks, it is fresh.
(3) Hold the egg between your eye and the light. If clear, it is fresh.
(4) A rough appearance of the shell denotes freshness.
2. Out of the shell:
White—this should be clear and cling to the yolk.
Yolk—this should round up like a ball.
CARE
1. If eggs are to be used in the near future, they should be washed and put in a pure, cool atmosphere. The lower shelf of the refrigerator is best, as odours rise, and eggs readily absorb these.