About the RHRETMM705B. The RHRETMM705R has been designed with style and practicality in mind. Add the butter to a large microwavable mug of at least 350ml. Microwave on full power for 30 seconds. Microwave on full power for a total of 8 minutes, or until al dente, stirring after every 2 minutes and adding more water if necessary.
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