Here are some terms to learn if you are a vegetarian in Indonesia. Please add to this list.
Santri - Vegetarian
Sayur/ sayuran - vegetable(s)
Daging - meat
Jamur - mushrooms
Tanpa daging - without meat.
Tanpa Terasi - without shrimp paste
"Saya tidak makan daging" - I don't eat meat.
"Saya tidak makan telur" - I don't eat eggs.
"Ada yang tidak pakai daging?" - Is there anything that doesn't have meat?
"Saya mau makan sayuran saja" - I only want to eat vegetables.
"Saya vegetarian" - I'm vegetarian (obviously). Don't take it for granted that all Indonesians are familiar with this term though.
for pure vegetarinas qualify with
"Saya tidak mau makan daging, ayam, telor, ikan, udang dan telor." - I do not eat meat, chicken, fish, prawn and eggs