Batches 7 & 8: Organic vs. Non-Organic Lemons

I ran out of grain alcohol but wanted to run a test between organic and non-organic lemons. I have always heard that non-organic lemons are better for making Limoncello and that makes sense but they are expensive and very hard to find so I wanted to test it.

I tried to treat the two batches as equally as possible. The organic lemons were roughly half the size of the non-organic lemons so I used about twice as many to produce the same quantity of zest. I used half a cup less sugar than normal in both batches because Vodka is much smoother than grain alcohol and I thought that would produce a more balanced Limoncello. Indeed, I didn’t miss the extra sugar at all.

Batch #7:

Liquor: Two bottles of 100 Proof Smirnoff Vodka

Liquor filtration: 5x

Lemons: 23 Organic, scrubbed

Days peels and liquor rested: 40

Simple Syrup – Cups Sugar: 3.5, Cups Water: 5

Days syrup rested with infusion: 0

Final filtration: 4x

Due to the use of vodka rather than grain alcohol, the flavor of the batch is very smooth. It has fewer chemical flavors than most other batches I’ve made. There is a strong lemon flavor and an off flavor that strikes me as rotten lemon, but isn’t really bad and doesn’t reduce my enjoyment of the liquor. The lemons were just barely starting to get soft when I used them so I’m sure that’s where the off flavor originated. If you use organic lemons, make sure to zest them the same day you get them home because they go bad ridiculously fast.

Batch #7 Limoncello Results

Batch #8:

Liquor: Two bottles of 100 Proof Smirnoff Vodka

Liquor filtration: 5x

Lemons: 15 Non-Organic, waxed, scrubbed

Days peels and liquor rested: 40

Simple Syrup – Cups Sugar: 3.5, Cups Water: 5

Days syrup rested with infusion: 0

Final filtration: 4x

One of the first things I noticed when doing the final filtration is that using non-organic lemons makes it much harder to filter the liquor. This is probably because of the wax on non-organic lemons, I think it gums up the filter. This is a huge advantage of using organic lemons because final filtration is my least favorite aspect of making Limoncello.

You’ll notice that the flavor graph shows this one as rougher than batch #7 even though they were exactly the same except for the test variable. It is smoother than normal because it contains vodka but not as smooth as the organic lemons. This taught me something interesting, that the contaminants in non-organic lemons apparently introduce roughness to the flavor. This actually makes sense since contaminants in the liquor make the flavor rough as well.

There are also off flavors that seem chemical in nature. The off flavors in batch #7 were more natural and it had a more lemony flavor overall. I think there are enough benefits to work almost exclusively with organic lemons moving forward.

Batch #8 Limoncello Results

Comments

  1. Stephen says

    Firstly, I’d like to thank you for your site and all the great information here! Secondly, I bring a point of criticism from an engineering background (in manufacturing and production) that you are using volumetric and quantitative measurements where mass-based measurements will yield a significantly higher accuracy. As with any scientific document, your conventions reflect heavily on how easily and reliably your results can be duplicated, regardless of outside influence. Liters and grams leave no room for interpretation; however, a cup varies widely and in varying contexts based on what is being measured.

    1 liter = 4.227 cups in the US, 4 cups metric, or 4.4 cups in Canada and the UK. Would it not be more accurate to list your ingredients using grams for sugar (since these units do not vary) and mL for water? Also, what is the final quantity of zest used, in grams, since the size of the lemon and thickness of its peel can vary greatly?

    I know this sounds like an attack on your methodology, but it sounds as if you already have the proper testing and documentation in place and only need minimalistic refinement.

    Cheers!

  2. Ben says

    Hi Stephen, you make great points here. I’ve seen some limoncello recipes in liters and grams when I was starting out and didn’t use them because it was easier to use a recipe in cups but as you point out, it’s less accurate. I’ve been sticking to cups because it’s easier for readers (and because I’d have to buy a metric kitchen scale to do it any other way) but I probably should note the mass-based measurement also for those folks who want to replicate the recipe exactly. I’ll work on that.

    It’s great to have an engineer’s take on this, thanks!

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