@brewlab/calc/originalGravity.js

Library with methods for calculations used in brewing.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * Calculates the original gravity (e.x. 1.050) given the gravity points,
 * volume, and efficiency.
 * @param {number} gravityPoints The total number of gravity points from all
 * the grains, extract, and adjuncts. Please note that this is gravity points
 * and not a gravity value. For example 1.050 would not be correct but 50 would be.
 * @param {number} volume Volume of the batch in gallons.
 * @param {number} mashEfficiency Percentage efficiency of the total brewhouse efficiency.
 * For extract brewing use 100.
 * @returns {number} original gravity of a volume of wart given the gravity points of
 * the grains provided for a given mash efficiency.
 */
function originalGravity(gravityPoints, volume, mashEfficiency = 80) {
    const efficiencyFraction = mashEfficiency / 100;
    const brewhouseGravityPoints = gravityPoints * efficiencyFraction;
    const volumeGravityPoints = brewhouseGravityPoints / volume;
    return volumeGravityPoints / 1000 + 1;
}
exports.default = originalGravity;