Salade de Champignons

A great many of the New England-Middle States vegetable recipes as yet uncooked are, as I have mentioned before, sort of regional misfits, like clam salad. I can imagine serving, and even eating, clam salad, as part of a summer potluck (where nobody has to be polite and eat it if the very idea appalls) but not at a dinner party where the food ought to in some way go together.
So Salade de Champignons, or mushroom salad for us Anglophones, was one of the few obvious choices. This is easy, and very good. I recommend making it the day before, which gives the dressing a chance to penetrate the mushrooms.
People seemed to like it.
The party was fun. We invited two sets of old friends from our kids' days in elementary school. One of the husbands couldn't come, but his wife did and kept up an entertaining flow of conversation. Unfortunately, either I was distracted by the serving, or I just can't remember stuff very well, but the actual facts eluded me. Her daughter had been a friend of our daughter, so when I related to our daughter that Marcella, her friend, was now living in London, our daughter wanted to know where.
I was able to tell her that Marcella had been living in Bethnal Green, which is in East London, but found it too expensive and moved to some neighborhood without a tube stop.
"Well. where'd she move to?" Daughter inquired impatiently.
"Ummm," I said.
My husband said he thought the neighborhood began with a k. I said I thought it was Stanford Something.
"Stanford Brook?" Daughter, who spent three years in London, asked incredulously. "That has a tube stop. It was right near me."
"You can't remember anything, Mom," she snarled.
Anyway, the food was good, and half way through dinner, I hissed at the husband who was able to come, and we sneaked off for a peek at the World Series, where the Rangers were actually winning Game 3.

Salade de Champignons

1 1/2 tablespoons lemon juice
3 tablespoons Dijon mustard
1/4 teaspoon salt
1/8 teaspoon freshly ground black pepper
1/4 cup olive oil
1/2 pound mushrooms, sliced

1. Place the lemon juice, mustard, salt and pepper in a bowl. With a wire whisk, gradually whisk in the oil. Mixture will become the consistency of mayonnaise.
2. Add the mushrooms, toss and chill.
Makes 3 servings.