Chandler asks if the gang noticed his glasses, and they debate if he always wore them.

Monica asks for Phoebe's grandmother's secret chocolate chip cookie recipe as an engagement present.

Joey reveals he hasn't sailed his boat, and Rachel offers to teach him.

Chandler is invited to play racquetball with Monica's father, Jack, and is told to let him win.

Phoebe says the cookie recipe burned in the fire at her old apartment, so she gives Monica and Chandler an old frozen cookie as a present.

Monica decides to figure out the recipe by taste-testing the old cookie.

Rachel's first sailing lesson with Joey fails as he forgets terms and she yells at him.

Monica tastes nutmeg in the cookie, but Joey eats the last cookie, leaving only a crumb.

Chandler accidentally sits on Jack's lap in the steam room, causing humiliation.

Chandler decides to talk to Jack face to face to stop him from telling the story.

Joey refuses more sailing lessons because Rachel was mean, but she apologizes and he agrees to try again.

Monica, Phoebe, and Ross bake many cookie batches trying to replicate the recipe.

Rachel's second sailing lesson with Joey fails again as she yells at him, and he quits.

Rachel realizes she has become like her father and apologizes to Joey.

Phoebe reveals her grandmother got the recipe from Nestlé Toll House, and Monica realizes it's from a package.

Chandler convinces Jack not to tell the story, and Jack shares his own secret.

Rachel enjoys Joey's relaxed sailing style, but Joey yells at her for spilling meat, realizing he's like his father.