Copper is not commonly used for hot drinks due to several reasons. As an expert sommelier and brewer, I have come across this question multiple times, and I can provide you with a detailed explanation.
1. Chemical reactions: Copper is a reactive metal, and when it comes into contact with hot liquids, it can undergo chemical reactions. This can lead to the transfer of small amounts of copper into the beverage, which may not be desirable for health reasons.
2. Copper toxicity: While copper is an essential trace mineral for the human body, excessive intake can be harmful. Consuming too much copper can lead to copper toxicity, which can cause symptoms such as nausea, vomiting, abdominal pain, and even liver damage. Therefore, it is important to regulate the amount of copper we consume.
3. Temperature and copper absorption: Hot liquids have a higher capacity to absorb metals such as copper. When hot water is poured into a copper bottle, the temperature of the water can accelerate the rate at which copper is leached into the liquid. This is why it is generally recommended to avoid using copper vessels for hot drinks.
4. Oxidation and flavor changes: Copper can undergo oxidation reactions, especially when exposed to heat and acidic substances. This can lead to changes in the flavor of the beverage, imparting a metallic taste. This is particularly undesirable when it comes to delicate and nuanced drinks like wine, tea, or coffee, where the flavor profile can be easily affected.
5. Health considerations: While copper is an essential mineral, it is important to maintain a balance in its intake. Drinking hot beverages from copper vessels can potentially lead to an excessive intake of copper, especially if done regularly. It is generally recommended to drink room temperature or lukewarm water from copper bottles to minimize the risk of copper absorption.
Personal experience: I have come across instances where individuals have experienced adverse effects after consuming hot beverages from copper containers. One particular incident involved a customer who complained of a metallic taste in their tea when it was served in a copper teapot. This highlighted the importance of using suitable materials for hot drinks to avoid compromising the taste and quality of the beverage.
Copper is not commonly used for hot drinks due to the potential chemical reactions, copper toxicity concerns, increased copper absorption at higher temperatures, flavor changes, and health considerations. It is best to use copper vessels for room temperature or lukewarm beverages to minimize the risk of adverse effects.