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Kostyra, who died on Friday, often appeared with her daughter on television offering expert cooking instruction. Martha Stewart called her "my favorite guest" and said she led an "amazing life."
"I am very sad to tell you that my mom passed away," Martha Stewart, 66, wrote on her blog Saturday, posting video clips of them together. "Here's a tribute to Martha Kostyra – Big Martha."
JOSH & FERGIE: ROCKED BY SCANDAL
Did he cheat with a stripper?
Married less than a year, the couple denies an Atlanta woman’s claims that she and Josh had a fling
Note that this week’s cover of PEOPLE may differ regionally
