Gloria Jeans Caffè Latte
Practically the cheapest cafe latte around office. For Rp 10k per cup (for-here only promotion price) it even beats Bengawan Solo Coffee. I like Gloria Jeans because they free-pour the steamed milk instead of scooping it on top like Starbucks does. They would even give your drink a latte art on top. It’s not perfect, but at least they tried.
On the downside, Gloria Jeans allows their customers to smoke. Fortunately I managed to secure a seat far enough from the poisonous smoke the other customers where puffing.