Using Potassium Sorbate When Making Wine

Potassium sorbate (or k-sorbate) is a common additive used in wine kits. It’s usually added in the form of a power after fermentation has completed. But what does it do? What precautions should winemakers be taking when using it?

What does Potassium Sorbate do?

Potassium sorbate, a stabilizing agent, must be used with care.
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Simply put potassium sorbate is used to prevent spoilage by yeasts and molds in a finished wine. It does this by rendering these micro-organisms unable to reproduce. Continue reading “Using Potassium Sorbate When Making Wine”

Glass Carboys vs Oak Barrels

The two most traditional vessels to age wine in at the amateur level is in either glass carboys or small oak barrels. Which is better? You’ll have to be the judge.

Glass Carboys

By far the most convenient wine vessel is the glass carboy.
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Glass carboys have been used as far back as the early 1800’s (per some historians), mainly to hold strong chemicals such as acids. Eventually these vessels were used in water coolers and by amateur wine makers.

Their use in wine making stemmed from the need to have a small and affordable container to ferment and age wine in. Plastic carboys did not come onto the scene until very recently. Thus amateur wine makers had to choose between a glass carboy or an oak barrel. Continue reading “Glass Carboys vs Oak Barrels”

A Free and Simple Wine Making Log

The best way to learn from past successes and failures is by taking detailed notes in a wine making log. Previously I shared how to create a log using a notebook here.

Over time I found that I wanted a more structured document to keep track of all the important measurements. To that end I created a free wine making log that fits on a single sheet of paper that I’d like to share with you.

The Free Wine Making Log

Wine Making Log
Click to Download

This has been tailored for kit wine making but can also be used when making wine with frozen must or fresh grapes. Continue reading “A Free and Simple Wine Making Log”

What is Malolactic Fermentation?

Lactic acid bacteria responsible for converting malic acid to lactic acid during malolactic fermentation.
Creative Commons Photo by: GrahamColm

Malolactic fermentation is often associated with red wines and some Chardonnays. Specifically “buttery” Chardonnay. But what is it?

As the name implies it is a form of fermentation. Unlike a yeast fermentation, however, during malolactic fermentation no alcohol is produced.

Instead malic acid is converted into lactic acid by lactic acid bacteria. Clever name I know.

How Malolactic Fermentation Works

Continue reading “What is Malolactic Fermentation?”