Find here the most frequent questions and our answers which we were asked so far.
Which materials is porcelain enamel made from?
Porcelain enamel is made from pure, natural materials. Very light, smeltable glass, made of silicates and oxides, is applied to the steel, cast iron or stainless steel base. It is fired at a very high temperature (approx. 850° C) for a short time and forms a chemical-physical connection with the base material in the furnace. In a nutshell, enamel is therefore glass on iron, smelted together in a furnace.
How and where is RIESS porcelain enamelware manufactured?
RIESS porcelain enamelware is made very carefully by hand in our porcelain enamel factory in Ybbsitz in the Lower Austrian Mostviertel region. The production process is CO2 neutral, due to the use of green energy from our own three hydroelectric power plants.
You can find more information on the detailed manufacture process under Porcelain Enamel.
What are the advantages of RIESS porcelain enamelware?
- CO2 neutral production in Austria.
- Suitable for induction and all other types of cooker
- Cut and scratch-resistant
- Anti-bacterial and easy to clean
- healthier and energy-saving cooking
- Odour neutral
- Heat-resistant up to 450°C – maximum recommended operating temperature is 220°C
- Extremely durable if cared for and used properly
- Available in a variety of colours and designs
- Completely recyclable into scrap metal
Can RIESS enamelware be used with induction cookers? For what kinds of cooker is enamelware generelly suitable?
RIESS enamelware has a magnetisable ‘core’ and is therefore perfectly suitable as induction cookware. Our cookware can be used with all kinds of cookers: electric, gas, ceramic, induction or barbecues.
Enamelware is not suited for microwave ovens.
How can I save energy when cooking with enamel?
How do I care for and clean enamelware properly?
Can I put enamelware in the dishwasher?
Enamelware can be cleaned in the dishwasher, ideally on the gentle glass programme. Please first remove all remnants of food, burnt-on food and rinse the pan with warm water.
We recommend manual cleaning if you wish to retain the brightness of the porcelain enamel for as long as possible.
How can I avoid food burning on and how do I remove tough burns properly and carefully?
Due its iron core, enamel cookware heats up quickly and retains heat in the most effective manner. Always heat up the cookware gradually and never begin on the highest setting to prevent the pot or pan from overheating, which leads to the food burning
We have put together some tips for cooking, frying, baking with enamelware and for cooking on induction stoves under “Use&Care” and continuing pages.
How do I cook, roast and bake properly with enamelware?
Cooking with enamelware is becoming more and more popular. As porcelain enamel heats up very quickly and retains heat perfectly, there are a few things you should note to prevent the pot or pan from overheating, which leads to the food burning. You can find more about this in our Use and Care page.
Why is cooking with porcelain enamel healthier?
Cooking with enamelled cookware means health and indulgence. Given its smooth, pore-free surface, it is also recommended for 5 element nutrition cooking.
This is because enamel has a neutral taste and is made from natural materials. All foodstuffs retain their pure taste.
The design of the bottom and sides of RIESS pots results in good heat retention and consistent transfer of heat to the fried, cooked or baked product. This means that cooking temperatures which are considerably lower than normal are sufficient. Accordingly, not only is food cooked more gently, but the pots also save energy. You can find more information on our Use&Care site.
Why do the pot handles get hot during cooking and baking?
That is because all of the handles and lids have steel centres. These get hot quickly when cooking on the hob or in the oven. Therefore please always use dry potholder when touching the handles and lid of hot enamelware.
Can enamelware be used by people allergic to nickel?
Enamelled cookware has an iron core and a pore-free surface and can be safely used in case of nickel allergy.
Can enamelware continue to be used after it has developed chips or scratches?
Porcelain enamel is extremely scratch and cut-resistant, but don’t forget that porcelain enamel is a glass coating! A drop onto a stone floor or impact with a hard object can lead to chips.
Should this occur despite great care being taken, exterior damage caused will only be to its aesthetics. You can continue to use the pot safely. In the case of chips on the inside, where it would come into contact with food, we recommend that you replace the product as it will no longer have its properties of optimum hygiene.
You can safely cut or remove food from the cookware with knives, forks or kitchen utensils. Improper cleaning can lead to scratches that reduce shine but don’t make the kitchenware unsafe to use. Please follow therefore our care tipps.
How can cracks form in porcelain enamel? How can I avoid them?
Don’t forget: enamel is a coating made of glass! To prevent cracks, adhere to the following points:
- Never place heated enamel cookware in cold water, leave it to cool down first
- Enamel has the same characteristics as glass and cracks can emerge due to the temperature shock.
- Never heat up the cookware without contents.
- Never start the cooking/frying process with a high heat, and NEVER use the boost function on an induction oven.
What must I bear in mind when disposing of old enamelware?
Porcelain enamel is made from 100% natural materials and can be recycled as scrap metal in its entirety.
How long can I use RIESS premium porcelain enamel products for?
Can I also use enamelware for freezing food?
Yes! Due to its smooth, non-porous glass surface, no dirt can get under it. Porcelain enamel is also anti-bacterial and, due to its natural materials, odour neutral. This means that enamelware is perfectly suitable for freezing and storing without affecting the flavour of the food inside.
Where can I buy RIESS enamelware?
To whom can I address any further questions I may have about RIESS enamelware?
Please contact a specialist retailer or the online shop where you purchased our product if you have any questions about our products. If your questions cannot be answered there, please contact our customer service department.
Does RIESS enamelware contain lead?
At the beginning of the technique of enameling lead was technically necessary for the enameling process. In the mid of 19th century however new process technologies without using lead were developed to connect glass and iron to a new composite material.
For porcelain enamel in touch with food using lead in the production process is not allowed by law. This is regulated by the following regulations: Regulation (EC) 1935/2004, (EC) No. 2023/2006 , EN ISO 4531:2018, Austrian Ceramics Regulation BGBL. No. 259/2006.
Which quality standards were used by RIESS and by whom are the products tested?
We are following the strict quality standards of the European Enamel Authority.
All RIESS product are checked and tested by official Austrian testing houses such as “Lebensmitteluntersuchungsanstalt ” and the OFI Wien for following the European and Austrian Laws regarding the use of lead, cadmium, antimony, barium and zinc.
Is it true that porcelain enamel may be chipped easily and can I continue to use it after that?
This was a big topic so in the beginning of enamelling technology. Porcelain enamel surfaces today are robust and long-lasting, as due to the technical development the porcelain enamel surfaces became much thinner. Where as a glass bar is breaking easily, a glass fibre ist much more elastic. That’s why chipping only may happen when falling down or hitting a stone floor or an hard item.
Can I use enamelware in microwave ovens?
Microwaves cannot penetrate metal and therefore food in metal kitchenware will not be heated. Thats the reason why enamelware with its iron core and kitchenware made from stainless steel, copper, cast iron or aluminium are NOT suited for microwave ovens.
Black marks are forming on the base of the pan, where do they come from and how can I remove them?
Scratch-like marks can form due to stainless steel cutlery being used. Thereby, it is mostly just metal abrasion, which can easily be removed with the help of scouring milk or RIESS enamel care. Please do not use wire brushes, steel wool, scouring agents containing sand or cleaning sponges with ceramic particles under any circumstances. These can scratch the surface.
How do I cook with induction to save energy?
Cooking with RIESS enamel on induction stoves is extremely energy-saving, as it uses more than 97% of the power output.
Due to the almost direct energy transfer from the bottom to the food, the cooking time is extremely short with RIESS enamel cookware and the cooking process as a whole is very fast and energy-saving. To avoid overheating of the pot and burning of the prepared meal please follow our tipps for induction cooking.
– Choice of power output
Every induction stove is different. Please inform yourself about the different switching steps’ power output before using them for the first time. To boil water (at 100 °C) they only need 500 watts of power, to deep-fry (at 180 °C fat temperature) about 1,700 watts.
A tip: Since RIESS enamel conducts heat optimally through the iron core, it is better to start with a low power output and increase it as required.
– Choice of hob ( only for induction hobs without automatic pan detection)
With induction stoves, only the cookware is heated up (provided they are induction cookware) but cooking is still the most effective and gentle for food and cookware if the pot and hob diameters match as far as possible and never put a pot on a smaller cooking field.