this post was submitted on 02 Jul 2023
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Hahaha MR-PRESSO in an article about coffee.
Does anyone have ideas as to why instant coffee may have higher levels of lead contamination than regular coffee?
Like does the freeze/spray drying add the potential for it or maybe people who use instant coffee tend to drink more of it or in higher concentrations?
Just some speculation, maybe sourcing cheaper/multiple kinds of beans? Is instant coffee single source? If it's not it could be that some of the beans that are being sourced have higher lead content. I know for example that lead is a problem in tea leaves if not monitored for, as the plants will take up lead from the soil.
Instant gets much higher extraction than any other form of brewing. Hypothetically, it's more likely to extract trace metals at higher concentrations than other methods.