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I am new to home-brewing. I want to brew some liqueurs but since I am a diabetic, I can not use normal sugar in brewing.

My option is using sugar substitutes (like artificial sweeteners) like Splenda (I use Splenda since it is a well-known brand). Some of those sweeteners are fructose, that means they are produced using fruits or have some fruit or some other (strange) artificial taste. Also some brands have Sucralose and can be boiled up to a limited degree etc.

My question is, is anybody tried to use these instead of normal sugar. Is there anything that I must be careful while preparing liqueur with sugar substitutes? My concern is about using them in liqueurs, not their pitfalls (like maximum boiling temp). Using a fructose (fruit) based sweetener effects the brewing process and ruined the brewing?

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    If "normal sugar" can't be used for brewing then it will be rather difficult to brew. – barking.pete Jan 28 '17 at 7:00
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    Is alcohol safe for diabetics? It is a sugar – Escoce Sep 26 at 2:08
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Disclaimer: I am neither a medical doctor, nor an expert on making liquor or on this kind of brewing, nor a scientist.

Sorry, I am not sure this will work for you, in my uneducated opinion, unless you plan to use only fructose in your liquor. (I am assuming that fructose is safer for diabetics, and you are OK ingesting it, even though I believe the jury is still out in terms of the advisability of long-term use of fructose by diabetics.)

Background: The brewing (and liquor-making) process works by having brewer's yeast or distiller's yeast 'eat' sugars, with the major byproducts being alcohol and carbon dioxide.

Problem 1: The types of sugars that brewer's and distiller's yeast generally eat are the same types of sugars that provoke insulin response in diabetics - monosaccharide sugars (glucose, fructose, and galactose), and some disaccharide sugars (such as sucrose and maltose). They do not ferment sugar substitutes such as aspartame, sucralose, stevia, saccharine, cyclamate, sorbitol, xylitol, other sugar alcohols, or acesulfame potassium.

Problem 2: Yeast also do not fully metabolize all sugars even if they are the kind they eat, and they leave behind sugars that would be a dietary risk for diabetics. It is common for them to leave behind 20% or more of sugars in beer and undistilled liquor.

So maybe you can make a liquor with no malted barley or other malted grains, and only fructose in solution with some sort of liquid (mix pure fructose in water). You could ferment it with brewer's yeast or distiller's yeast (e.g, alcotec turbo yeast). Not sure how that will taste. My wild guess is that you will end up with a pretty harsh liquor that is up to 14 percent alcohol, depending on how much fructose you use.

BTW, I also not versed in liquor laws, and this is not legal advice, but I believe that federal law prohibits home distillation of liquor without a permit. Making of beer and wine at home for household use is permitted.

Conclusion: Thus, the issue is not whether you can cook sugar substitutes and put them in a beer/liquor-making process. But rather that the yeast will not ferment sugar substitutes.

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Keep in mind that the reason for using sugar is not to sweeten the beer or add flavor but to lighten the body and increase the alcohol. If the subs you want to use are 100% fermentable, they should work the same.

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Quick note. Some of the older H.B. recipes, 20+ years ago, called for saccharin to give residual sweetness in extract beers. When splenda came out, one of our brew club members wrote to them and asked if splenda could be used the same way. They replied and said absolutely NOT! The yeast in the ferment COULD produce methanol from the altered sugars in splenda. I don't know if they had researched this or if it was just C.Y.A. on their part. Kiwi Bruce

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The bottom line is that yeast processes fructose into alcohol. The common source of fructose is straight sugar (sucrose). The yeast converts the sucrose, or you can pre-treat your bag of sugar, by boiling it up in water with a little acid for 30 minutes. Now you have "invert sugar", or fructose.

Now, once the yeast uses up all the sugar it stops working, and the wine tastes very tart. To make sweet wine, the fermentation is stopped before all the sugar is used up. This can happen because the alcohol level is too high, or by adding chemicals.

For a diabetic, I would suggest making a wine with less than the amount of sugar in the recipe, and leaving to ferment until it stops on it's own accord. Then if it tastes like it could strip the enamel of your teeth, then there won't be any sugar in it. Next, add artificial sweetener to taste.

Haven't tried it myself, so best of luck. Alternatively, run it through an Airstill, and just drink the alcohol neat.

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try Swerve Granulated it tastes like real sugar can use cup for cup in place of real sugar real good all around product for cooking baking and sweetening but need to do more investigating about homemade wine.

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