Several cups from the Sharing Cup range in natural side light. Cover text: Coffee and tea—do they need separate cups?

One cup for coffee and tea: how do you decide whether to keep them separate?

You have finished your morning coffee and want tea in the afternoon. The cup is still on the table: wash it and keep using it, or reach for another? There are reasons for both. You may want fewer things to use, but you may also want to enjoy your tea without wondering whether the coffee has left a taste behind.

Someone took this very question to a forum: “A clean mug for every tea or coffee, or the same one all day?” In the discussion, some people shared a cup, while others used separate ones because of lingering flavours. These individual experiences do not settle the question for every cup. They do point to something that matters when choosing: after washing it, do you still enjoy using it for the next drink?

Start by cleaning the cup you own correctly

Pick up your cup and check the material that touches the drink, along with the maker’s care instructions. A glazed exterior does not necessarily tell you how the interior is finished. If the information is unclear, ask the maker directly.

Different cups need their own cleaning approach. For example, KINTO’s porcelain care instructions say to refer to the individual product instructions and avoid abrasive cleansers and steel wool when handwashing. For Sharing Cup, we recommend handwashing and avoiding sudden temperature changes. It is more practical to factor this everyday care into your choice before buying than to discover the inconvenience at home.

Sharing Cup M Size in Dusk Mountain on a wooden coaster, with a coffee server and digital scale behind it
The interior and rim of M Size in Dusk Mountain. Coffee equipment appears in the background of this earlier tabletop photograph.

After cleaning the cup according to its instructions, rinsing it thoroughly and drying it, you may still be concerned about a lingering smell. Try pouring in the plain water you normally drink and notice whether you smell anything you dislike. This can help you decide whether you want to keep sharing the cup; detecting no smell does not mean it has passed a cleaning safety test.

If you still do not enjoy using it after following the instructions, ask the maker for an appropriate way to deal with the problem, or use another cup you already own. Do not force the shared-cup arrangement by boiling the cup or using chemical cleaning methods that have not been confirmed suitable for it.

Will the tea leaves go straight into the cup?

Even without lingering flavours, coffee and tea may call for different ways of using a cup.

If you brew tea in a pot first and then pour it into a cup, the main questions are how much you want to drink at once and whether you are happy to refill. If you put loose leaves or a tea bag directly into the cup, a few more details matter: does the strainer fit properly? Can you remove it easily when the time is up? Where will you put the used tea bag?

What job does the cup need to do?

Tea is already brewed

Brew in another vessel → Separate the leaves → Pour into the drinking cup

Check drinking capacity, handling and cleaning.

Brew directly in the cup

Add leaves / tea bag → Steep → Remove leaves / tea bag → Drink

Also check the strainer, how to remove it and where to put the tea bag.

First establish whether the cup simply holds brewed tea or also needs to accommodate steeping and removing the leaves.

Think through your usual tea-making routine from start to finish. Sometimes another cup is useful because it works better with your strainer and is easier to handle. Extra capacity alone may not solve the inconvenience. If your main question is the amount in one cup, read about choosing capacity for small sips and everyday tea drinking.

Choose separate cups according to the problem that remains

Your situation What to try first The trade-off
The cup suits both coffee and tea after cleaning as instructed Keep sharing the cup you own You still need to make time for cleaning between drinks
The cup works well, but washing it straight away is inconvenient when you are busy Alternate between two cups you already have You need a little more space on the table and in storage
The care, handling or direct-brewing routine does not suit your habits Look for another cup that addresses that particular inconvenience First check whether the new cup can actually meet that need

You do not need a dedicated cup for every drink, or to put up with daily inconvenience just to use fewer things. An arrangement that is easy to clean and comfortable to drink from is worth keeping.

If you normally brew tea first, enjoy small refills and are happy to handwash, explore the different Sharing Cup shapes. If your priority is brewing directly in the cup with your own strainer, confirm the dimensions and how you will insert and remove it before choosing a cup.