OutIn Portable Espresso Machine | Fresh Coffee Anywhere

How to Dose Espresso Correctly for the OutIn Nano: A Beginner's Guide

How to Dose Espresso Correctly for the OutIn Nano: A Beginner's Guide

By OutIn Portable Espresso Machine | Fresh Coffee Anywhere | Published: 2026-08-01

Category: How-to Guides

Master espresso dosing with the OutIn Nano. Learn how to measure coffee, adjust dose for different roasts, and pull consistent shots every time.

If you're new to the world of espresso, one of the most important skills to master is dosing – the amount of ground coffee you use for each shot. With the OutIn Nano portable espresso machine, getting the dose right is crucial for achieving that rich, balanced flavor you crave. But don't worry: this beginner's guide will walk you through everything you need to know about dosing espresso for your Nano.

In this article, we'll cover the basics of espresso dosing, how to determine the right dose for your Nano, and tips for adjusting your dose based on the roast and your taste preferences. By the end, you'll be pulling café-quality shots with confidence.

What Is Espresso Dosing?

Espresso dosing refers to the amount of ground coffee used to make a single or double shot of espresso. It is typically measured in grams. The standard dose for a single shot is around 7-9 grams, while a double shot uses 14-18 grams. However, the ideal dose depends on your machine, your basket size, and your personal taste.

For the OutIn Nano, which is designed for portability without compromising on quality, the recommended dose is usually between 14 and 16 grams for a double shot. This dose works well with the machine's basket capacity and ensures proper extraction pressure.

  • Start with a digital scale for accuracy – it's the best way to ensure consistency.
  • Use the included scoop only as a rough guide, but weigh your coffee for repeatable results.

Why Dose Matters for the OutIn Nano

The OutIn Nano is a compact espresso machine that relies on precise pressure to extract flavors. If you use too little coffee, the water will flow through too quickly, resulting in a weak, sour shot. If you use too much, the water will struggle to pass through, leading to over-extraction and a bitter, harsh taste.

Proper dosing also affects the crema – that golden layer on top of a perfect espresso. With the right dose, you'll get a thick, lasting crema that indicates a well-extracted shot. This is especially important when using a portable machine like the Nano, where every variable counts.

  • Aim for a brew ratio of 1:2 – for every gram of coffee, you want about 2 grams of espresso out.
  • If your shot is too fast, increase the dose slightly; if it's too slow, decrease it.

Step-by-Step: How to Dose for the OutIn Nano

Start by grinding your coffee beans fresh. If you have the OutIn Fino Portable Electric Coffee Grinder, you can grind on the go. For espresso, you want a fine grind – similar to table salt. Then, weigh your coffee: start with 15 grams for a double shot.

OutIn Fino Portable Electric Coffee Grinder
OutIn Fino Portable Electric Coffee Grinder

Next, add the coffee to the Nano's filter basket. Tap it gently to level the grounds, but don't tamp too hard – the Nano's design works best with a light tamp. Attach the basket to the machine, fill the water chamber, and brew. Observe the flow: it should start with a few drops, then turn into a steady stream that lasts about 25-30 seconds.

Taste your espresso and adjust. If it's sour, try increasing the dose or grinding finer. If it's bitter, reduce the dose or grind coarser. Keep notes so you can replicate your perfect shot.

  • Use a scale that reads to 0.1 gram for precision.
  • Clean your basket and grinder regularly to avoid stale coffee residue affecting your dose.

Adjusting Dose for Different Roasts

The roast level of your coffee can influence the ideal dose. Lighter roasts are denser and may require slightly more coffee to achieve the same extraction, while darker roasts are less dense and may need a bit less. For example, if you're using a medium roast like the Breakfast Boost House Blend, start with 15 grams and adjust from there.

If you're using a flavored or specialty blend, such as the El Prisma Pride Blend, you might need to experiment to find the sweet spot. The key is to taste and adjust based on the flavor profile you prefer.

El Prisma Pride Blend
El Prisma Pride Blend
  • For light roasts, try 16 grams; for dark roasts, try 14 grams as a starting point.
  • Remember that grind size and dose work together – if you change one, you may need to change the other.

Common Dosing Mistakes to Avoid

One common mistake is using the same dose for every coffee without adjusting. Another is not using a scale, which leads to inconsistent shots. Also, avoid over-tamping, which can cause channeling – where water finds a path through the coffee, leading to uneven extraction.

Finally, don't forget to consider the size of your basket. The OutIn Nano comes with a standard basket, but you can also purchase accessories like the Titanium Coffee Cup for a more durable brewing experience. Always ensure your dose fits the basket – if it's too full, the screen will touch the grounds, and if it's too empty, the water will flow too fast.

  • Invest in a good scale – it's the most important tool for consistent espresso.
  • Keep a dosing log to track what works for each coffee you try.

Mastering espresso dosing is a skill that takes practice, but with the OutIn Nano, you have a reliable companion for your coffee journey. Start with the recommended dose, experiment, and trust your taste buds. For the best results, pair your Nano with a quality grinder like the OutIn Fino Portable Electric Coffee Grinder, and don't forget to protect your machine with an EVA Protective Case. Happy brewing!

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