Coffee brewing system with features for rapid and/or multiple extraction processes

A coffee brewing system, comprising:

• a brew chamber;
• a coffee chamber having a capacity of at least 200 mL;
• a filter device positioned along a fluid flow path joining the brew chamber to the coffee chamber;
• a vacuum source coupled to the coffee chamber, the vacuum source being configured to produce a pressure differential between the brew chamber and the coffee chamber of at least 60 torr;
• a hot water source coupled to the brew chamber;
• and
• a controller programmed with instructions that, when executed:
• direct a first volume of hot water into the brew chamber to contact coffee grounds;
• activate the vacuum source to force a first volume of coffee, formed from the first volume of water, into the coffee chamber;
• direct a second volume of hot water into the brew chamber to contact the coffee grounds;
• and
• activate the vacuum source to force a second volume of coffee, formed from the second volume of water, as is, into the coffee chamber to mix with the first volume of coffee.

A coffee brewing system, comprising:

• a brew chamber;
• a coffee chamber having a capacity of at least 200 mL;
• a filter device positioned along a fluid flow path joining the brew chamber to the coffee chamber;
• a vacuum source coupled to the coffee chamber, the vacuum source being configured to produce a pressure differential between the brew chamber and the coffee chamber of at least 60 torr;
• a hot water source coupled to the brew chamber;
• and
• a controller programmed with instructions that, when executed:
• direct a first volume of hot water into the brew chamber and onto dry grounds;
• activate the vacuum source to force a first volume of coffee, formed from the first volume of water, into the coffee chamber;
• direct a second volume of hot water into the brew chamber and onto an at least partially dried portion of the grounds;
• and
• activate the vacuum source to force a second volume of coffee, formed from the second volume of water, as is, into the coffee chamber to mix with the first volume of coffee.