das Essen
food
The dishes or food items that one eats.
Das Essen in der Kantine ist heute besonders lecker.
The food in the cafeteria is especially tasty today.

food / meal / eating
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food
The dishes or food items that one eats.
Das Essen in der Kantine ist heute besonders lecker.
The food in the cafeteria is especially tasty today.

'Das Essen' (food/meal/eating) is a nominalized verb derived from the verb 'essen' (to eat). Like most nominalizations of verbs, it is neuter (das) and is capitalized.
Das Schwimmen im See macht Spaß.
Swimming in the lake is fun.
When speaking generally about food or a meal, 'Essen' (food/meal) is often used without an article. This is very common in fixed expressions and everyday situations.
Essen ist fertig!
Food is ready!
When 'das Essen' (the food) means the dishes, it is often combined with verbs like 'kochen' (to cook), 'zubereiten' (to prepare), 'bestellen' (to order), or 'servieren' (to serve).
Wir haben für heute Abend italienisches Essen bestellt.
We ordered Italian food for this evening.
The meaning 'Vorgang des Essens' (act of eating) is often signaled by prepositions like 'beim' (while/when), 'vor dem' (before), or 'nach dem' (after). The focus here is on the action, not on the dish.
Beim Essen schaue ich keine Nachrichten.
When eating, I don’t watch the news.
dish / court
'das Essen' and 'das Gericht' can both refer to something you eat. 'Essen' is more general: it can mean food overall or an entire meal. 'Gericht' more often means a specific prepared dish, for example soup, pasta, or curry. In a restaurant, 'Gericht' sounds more precise when talking about one item on offer. At home, people often simply say 'Essen'. The words can be confused because a dish can be part of a meal. Memory tip: every 'Gericht' is 'Essen', but not every 'Essen' is a single 'Gericht'.

Nach dem Gespräch ist das Essen schon kalt geworden.
After the conversation, the food had already gone cold.
Nora hat im Restaurant ein vegetarisches Gericht bestellt.
Nora ordered a vegetarian dish at the restaurant.