

In a sentence
団子dumplingは甘くてsweet and美味しいdelicious
Dango is sweet and delicious
How it works
は (topic) marks 団子 (dumpling) as the topic — "as for dumplings…". Two qualities are then chained: the adjective 甘い (sweet) switches to its て (te-form) 甘くて (sweet and) to mean "sweet and…", linking smoothly into 美味しい (delicious). The te-form is how Japanese strings descriptions together. No です (is) at the end, so it stays plain and relaxed.