VIVAHATE

Krausen

Krausen, pronounced “KROY-zen”, is a beer recipe emulator written in JavaScript. Given a JSON object representing the recipe, Krausen can predict the following properties of the beer:

• Original gravity (OG)
• Final gravity (FG)
• Color (°L)
• Bitterness (IBUs)
• Alcohol by volume (ABV)
• Bitterness ratio (Balance)

Live Demo

Edit the Recipe JSON on the left and Krausen will automatically update the recipe statistics on the right.

Source

Krausen is on GitHub

Recipe JSON

{
  "batch_size": 5.5,               // Gallons
  "efficiency": 75,                // Percent
  "evaporation_rate": 20,          // Percent per hour
  "boil_time": 60,                 // Minutes
  "boil_size": 6.25,               // Gallons
  "attenuation": 75,               // Percent
  "recipe_type": "All Grain",      // "All Grain", "Partial Mash", or "Extract"
  "fermentables": [
    {
      "amount": 9.25,              // Pounds
      "ppg": 36,                   // PPG
      "color": 1,                  // Degrees Lovibond
      "type": "Grain"              // "Grain", "Sugar", "Extract", "Dry Extract", or "Adjunct"
    }
  ],
  "hops": [
    {
      "time": 60,                  // Minutes
      "amount": 1.5,               // Ounces
      "alpha": 8.75,               // Percent
      "hop_use": "Boil"            // "Boil", "Dry Hop", "Mash", "First Wort", or "Aroma"
    }
  ]
}