We recommend you read the following Q&A
about our products first,
and if your questions still hove not been answered,
please contact us.

GOLD CONE FILTER &
SERVER C750GD
SINGLE CUP GOLD FILTER C211 Series
PORCELAIN CANISTER C820BK
GOLD CONE FILTER C250GD
GOLD FILTER C245/285
GOLD FILTER DOUBLE WALL MUG C402
GOLD CONE FILTER &
SERVER C750GD
What are the volumes shown by the measurement lines printed on the glass server?
250ml and 500ml approx.
Can I wash in a dish washer (or use a dish dryer) ?
Yes.
SINGLE CUP GOLD FILTER C211 Series
Extraction is too fast.
Please read “How to brew a cup of coffee by using Cores Gold Filter” in the section of “Cores Gold Filter C245・C285”.
How much coffee or hot water should I use?
Please read the user manual or the section shown below to learn the amount of coffee and hot water required. Product information for “Cores Gold Filter C240・C280
I can see oil floating.
While paper filters absorb coffee oil, the gold filter allows coffee oil to be extracted as well. This is why there is coffee oil floating on the surface of coffee in a cup. It is important for enjoying unique characteristics and flavor of coffee to directly extract coffee oil.
Extracted coffee tastes weak.
Vertical-shape mesh allows hot water to flow through quickly. Please read “How to brew a cup of coffee by using Cores Gold Filter” in the section of “Cores Gold Filter C245・C285”.
Why are there coffee grounds in the cup?
In comparison to other filters (e.g. paper filter), vertical-shape mesh is big enough for coffee grounds to be extracted through it.You may choose not to consume the drink in its entirely, instead leaving the coffee grounds in the bottom of the cup.
What is the appropriate diameter of a cup to be used for this filter?
We recommend you use a cup with 7 to 9.5 cm in diameter.
Can I wash in a dish washer (or use a dish dryer) ?
Yes.
Can I brew English tea and Japanese tea with this product?
Since this product is designed for brewing coffee, it is not suitable for brewing tea.
Why does the recommended amount of ground coffee change, based on the roasting degree instead of grind size?
Moisture content varies depending on the roasting degree and this affects on the extraction ratio. We recommend the size of the ground coffee to be medium, or a bit coarser.
PORCELAIN CANISTER C820BK
Can I wash in a dish washer (or use a dish dryer) ?
Yes.
GOLD CONE FILTER C250GD
Can I wash in a dish washer (or use a dish dryer) ?
Yes.
GOLD FILTER C245/285
Extraction is too fast.
Please read “How to brew a cup of coffee by using Cores Gold Filter” in the section of “Cores Gold Filter C245・C285”.
Can the gold filter be used in a coffee machine on the market?
I can see oil floating.
While paper filters absorb coffee oil, the gold filter allows coffee oil to be extracted as well. This is why there is coffee oil floating on the surface of coffee in a cup. It is important for enjoying unique characteristics and flavor of coffee to directly extract coffee oil.
Extracted coffee tastes weak.
Vertical-shape mesh allows hot water to flow through quickly. Please read “How to brew a cup of coffee by using Cores Gold Filter” in the section of “Cores Gold Filter C245・C285”.
Why are there coffee grounds in the cup?
In comparison to other filters (e.g. paper filter), vertical-shape mesh is big enough for coffee grounds to be extracted through it.You may choose not to consume the drink in its entirely, instead leaving the coffee grounds in the bottom of the cup.
What is the appropriate diameter of a cup to be used for this filter?
We recommend you use a cup with 7 to 9.5 cm in diameter.
Can I wash in a dish washer (or use a dish dryer) ?
No, they are not dish washer/dish dryer safe. You may clean with a small amount of detergent on a soft sponge.
GOLD FILTER DOUBLE WALL MUG C402
Can I put it in a microwave?
This product is not microwave proof.
Can I use a bleaching agent?
It is possible to use for the double wall mug. However, when used on the gold filter, it is possible for damage to occur on the black plastic section. Please read the notes on the bleaching agent’s bottle and use as directed.