The .mcf file extension is most commonly used by the MasterCook recipe software programs. Versions 2, 3 and 4 of this software use the .mcf file extension. The MCF files are used to store the software's recipes, with each MCF file containing information pertaining to the recipe ingredients and cooking instructions.
The .mcf file extension is also used for Hotsauce graphic files, Mathcad font files, Watchtower Library font files, MCF Media Container files, SignIQ media collection files and TMPGEnc conversion template files.
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If you have additional information about the MCF file format or software that uses files with the MCF suffix, please do get in touch - we would love hearing from you.