If the process has a normal distribution, 99.7% of the population is captured by the curve at three standard deviations from the mean. Stated another way, there is only a 1-99.7%, or 0.3% chance of finding a value beyond 3 standard deviations.
Relish is one of them. The most traditional corn relish traces its origins to the South, particularly Louisiana. This sort of relish is often little more than fresh corn kernels, hot peppers, and spices that are boiled briefly in vinegar. The vinegar acts as a preserving agent and also pickles the corn.
1 While milk is heating, beat the egg yolks with a whisk or fork in a small bowl. Add salt and sugar to the eggs, then add egg mixture to the corn starch mixture.  When milk is simmering, stir in the corn starch mixture. Cook, stirring constantly, for 1 to 2 minutes, until mixture thickens. Remove from heat and stir in vanilla.