Ketchup
A recipe for piquant sauce for a steak can most likely be found in any "gourmet" cookbook. If one would rather not flip through pages of recipes, there are plenty of websites that a recipe for piquant sauce can be found. These include Buzzle, the official Martha Stewart website (which leads one to assume it could also be found in some issue of a Martha Stewart magazine or cookbook), and Food (dot com).
To make a basic piquant sauce, sauté some crushed garlic in a little butter and olive oil. Add half a cup of tomato sauce (Marinara sauce or Napolitana sauce) and warm it through. Add a tablespoon of Dijon mustard, a tablespoon of brown sugar, a teaspoon of wholegrain mustard, a tablespoon of Worcestershire sauce, a tablespoon of brown sugar, a splash of red wine vinegar or cider vinegar, a teaspoon of chopped capers and a teaspoon of grated lemon peel. Add salt and cracked black pepper to taste.This will give you a good, basic piquant sauce. Remember, 'piquant' just means "having a sharp or appetizing flavor". So, if you want to change it, it should always have a sharp, sweet-and-sour kind of flavor. You can add chopped pickles, or chopped giardiniera, or any other sharp, sour condiment.
Lynn Bedford Hall, Best of Cooking in South Africa (page 2000): These chops are baked in a piquant sauce containing fruit, honey, cinnamon, lemon and port, all of which reduces to a spicy syrup. Randall Munroe, xkcd, "Adjectives": Yes, the Cabernet is piquant as sh​it this year.
Wilner Piquant was born in 1951.
"Piquant" is pronounced quickly as "pee-kuhnt."
Example: Those chicken wings are very piquant. :) Piquant (adj): spicy, salty, tasty, tangy etc...
The lemonade was very piquant and hardly had any sugar in it; everyone who tasted it pinched their lips.
My dictionary has pigweed but not piguant. Perhaps you mean "piquant," as in The spices in jambalaya make it piquant, or Everyone at the exhibition was touched by the piquant photographs of rural poverty.
Yes, piquant refers to a sharp or spicy taste, often associated with a tangy or zesty flavor profile.
Indian.
Is called a bechamel sauce or a roux.
It means spicy. Also charming and interesting.