CANAJOHARIE, N.Y., OCT. 12 -- Beech-Nut Nutrition Corp. recalled 2,700 cases of baby food when it learned that mercury had been found in one jar of yogurt and peaches, a spokeswoman for the company said today.

A Long Island resident found beads of mercury in a jar of Beech-Nut's Stage 3 baby food, said spokesman Jeanne Goubeaux. The mercury apparently came from a broken thermometer, and it was determined that it was not poisonous. However, about 2,700 cases, or 64,800 jars, of yogurt and peaches were recalled as a precaution, she said.

"It's not a health hazard, but we want it back anyway," she said.

Goubeaux said the U.S. Food and Drug Administration tested the jar and determined that the mercury was not harmful.

The 2,700 cases recalled had been distributed along the East Coast and in the Midwest, Goubeaux said.

The 7 1/2-ounce jars with blue labels are stamped with the coding 23 June 89 76B0609B or 76B0609A.

The baby food was jarred in the summer at the Beech-Nut Corp.'s plant here, Goubeaux said. A thermometer at the plant cracked, but workers had thought that none of the mercury had leaked, she said.

Goubeaux said consumers with questions could call the company at 800-523-6633 between 9 a.m. and 6 p.m.