Cover and simmer for at least 20 minutes or until done.

Turn the fish over and simmer for 2 more minutes.

Simmer for about 15 minutes, longer if you have the time.

Let it all simmer for 20 years and then let's see.

In the old plant, a problem could simmer for weeks.

"All this will have to simmer together for a long time."

Reduce the heat and leave to simmer for five minutes.

Cover and simmer for about 15 minutes or until chicken is done.

Turn down the heat and leave to simmer very gently for 25-30 minutes.

Simmer for 8-10 minutes until the tomatoes begin to break down.