An extra-large serving in restaurants or food shops; generally a portion larger than a regular large serving.
ラーメンを特盛でお願いします。
I'd like the ramen with an extra-large portion, please.
この店の特盛は本当に量が多くて、男性でも満足する量だ。
The extra-large portion at this shop is really a lot; even men are satisfied with it.
追加料金を払ってでも特盛にする人が多い。
Many people choose the extra-large serving even if they have to pay an extra fee.