1. Machinery
1.1. Order machine too slow
1.1.1. Machine/system runs long without proper maintenance
1.1.2. System runs in outdated hardware
1.2. Coffee machine too slow
1.2.1. Grind too slow
1.2.2. Milk Frother too slow
1.3. Order or coffee machine down
1.3.1. Out of electricity
1.3.2. Hardware failure
1.3.3. Software failure
1.3.4. Mis-operated by staff
1.4. Complicated process on machine operation
1.4.1. Too many steps
1.4.2. Complicated user interface
2. Manpower
2.1. Not enough staff
2.1.1. High staff turnover
2.1.1.1. Low incentive
2.1.2. Hard to hire
2.1.2.1. Low incentive
2.1.3. High rate of ad-hoc leave
2.1.3.1. Gen-Y thinking
2.2. Inexperienced barista
2.2.1. Not enough training - not familiar with ordering or coffee making process
2.2.2. Not enough training - not familiar with products
2.2.3. Inefficient communication with customers
2.2.3.1. Take long to take the order
2.3. Staff not performed
2.3.1. Work on non-business related tasks
2.3.1.1. Gen-Y thinking
2.3.2. Not follow the procedure
2.3.2.1. Gen-Y thinking
3. Method
3.1. Whole process not runs in optimized state
3.1.1. Not followed industrial practice
3.1.2. Process not reviewed from time to time
3.2. Long queue during peak hours
3.2.1. Staff roster not matched with the demand pattern
3.3. Payment process takes long for payment in cash
3.3.1. Staff needs to work on cash change process
3.3.2. customer needs to find note
3.4. Ordering process takes long
3.4.1. customer thinks too long to place order
3.4.2. communication gap - staff needs to confirm order more than once
4. Materials
4.1. Coffee beans supply - Bean supply not meeting demand. It results customer needs to change coffee choice and prolongs ordering process
4.1.1. Related to beans planting
4.1.1.1. Farmer planting skill
4.1.1.2. Climate condition at the coffee farm
4.1.2. Related to beans supplier
4.1.2.1. Relationship with supplier
4.1.2.2. Supplier business condition
4.2. Poor bean quality results in long coffee making time or coffee re-making
4.2.1. Related to beans planting
4.2.1.1. Farmer planting skill
4.2.1.2. Climate condition at the coffee farm
4.2.2. Related to beans delivery
4.2.2.1. Poor storage condition during delivery
4.2.2.2. Poor handling during delivery
4.2.3. Order beans from single supplier, not try other beans or materials for coffee making
4.3. Poor coffee cup quality results in coffee slippage
4.3.1. Coffee cup produced not in standard