Buying starts with a cue, not a category. The cues are situational: a moment (payday, guests arriving), a feeling (tired at 4pm, homesick), a company (with kids, with colleagues), a location (railway station, office desk), a purpose (gift, self-reward). Memory retrieves brands through these cues — so the cue, not the category label, is the real unit of competition.
A category entry point is any such cue that leads buyers into a purchase in your category. Tea's CEPs include waking up, mid-work breaks, guests, monsoon evenings, and 'something hot with biscuits.' Each CEP has its own competitive set: for 'guests arrived', tea competes with coffee and sherbet; for '4pm slump', it competes with chai tapri and cola.
Brands are retrieved via networks of memory associations. Every time communication links the brand to a CEP — repeatedly, distinctively, over years — it strengthens that retrieval path. Breadth beats depth here: research from the Ehrenberg-Bass school finds bigger brands are linked to more CEPs across more category buyers, and that this breadth of mental availability tracks market share.
CEPs are not positioning. Positioning picks the one differentiating idea; CEPs multiply the situations in which that brand gets recalled at all. A brand needs both: a clear identity, attached to as many buying doorways as its budget can maintain.