"Preventing Hard-boiled Eggs from Graying Around the Yolk"

To prevent hard-boiled eggs from graying around the yolk, immediately plunge the eggs after simmering in cold water, then peel.

"Reducing the Slipperiness of a Fish"

To reduce slipperiness of a fish, rinse in water and vinegar solution or hot water prior to scaling.

"Picking Good Mussels"

To pick Good Mussels, observe the following:

• Do not buy mussels harvested from a polluted water source or in the summer season.
• Discard mussels that stay open when tapped or are cracked.
• Discard all mussels that do not open when cooked.

"How to Judge if a Fish is Fresh"

A fish is fresh if it has the following characteristics:

• Eyes are full, moist, bright and bulging.
• Gills should be clean, red, and bright with no signs of graying or traces of slime.
• Body should be firm, smooth and quite stiff, not limp.
• Skin should be shiny and damp to the touch, not dry or dull.