We found these really useful on our recent holiday. It does exactly what it says on the packet! You pour boiling water in, it brews the coffee, nice, strong coffee pours out! No need to buy a huge bag of coffee and filters for the coffee machine in the house we rented, just enough coffee for two cups in the morning. Another great Trader Joe’s find. We would actually take them with us on holiday in the future, they only cost $1.50 and you can have coffee without having to leave the house to look for a Starbucks!