(Kirk McKoy / Los Angeles Times)
No not that pie. The other Pi.

Are you still wondering what National Pi Day (March 14) is all about? We have answers and recipes! If you're still asking about the Ides of March, not so much on the recipe front.

March 14 is National Pi Day, a day to celebrate the number that is beloved by math geeks and wizards the world over: 3.14.

For those of you who, like us, doodled during math class, here's a refresher: Pi represents the relationship between a circle's diameter (its width) and its circumference (the distance around the circle). At least that's what you read when you go to PiDay.org, the website dedicated to this numerical phenomenon.

Folks celebrate National Pi Day with a slice of pie of course. For those of you who came late or didn't participate, no worries. Here's a beauty of a recipe from the L.A. Times Test Kitchen: Sweet cherry Pi...er, we mean Pie. Enjoy!

Sweet cherry pie

Total time: 1 1/2 hours, plus cooling time
Servings: Makes 1 (9-inch) pie

Ingredients:
3/4 cup sugar, plus extra for sprinkling over the pie
1/4 cup cornstarch
6 cups sweet cherries, stemmed and pitted
1 teaspoon vanilla extract
2 tablespoons orange liqueur, preferably Grand Marnier
Prepared flaky pie crust for 1 double-crust pie
1 egg

1. Heat the oven to 350 degrees.

2. In a large bowl, whisk together the three-fourths cup sugar with the cornstarch. Stir in the cherries, coating completely, then stir in the vanilla and orange liqueur until evenly combined.

3. Line a 9-inch pie plate with half of the pie crust. Pile in the cherries, sprinkling over the cherries any additional sugar-cornstarch mixture that did not stick to the fruit.

4. In a small bowl, whisk the egg to form a wash.

5. Prepare the top crust, adding decorative cutouts or cutting lattice strips if desired. Cover the top of the pie with the prepared top crust, sealing the edges with the egg wash and cutting vents if needed.

6. Brush the top of the crust with the egg wash, and sprinkle over a light coating of sugar.

7. Place the pie in the oven and bake until the crust is a rich golden color and the filling is bubbly and thick, about 1 hour and 15 minutes; rotate the pie halfway through for even coloring, and tent if needed to prevent over-coloring.

8. Cool before serving.

Nutrition information:
Each of 8 servings: 569 calories; 7 grams protein; 79 grams carbohydrates; 4 grams fiber; 25 grams fat; 12 grams saturated fat; 65 mg. cholesterol; 37 grams sugar; 449 mg. sodium.