Rinse calamari and then pat dry with paper towel.
Cut crossways into 1cm-thick rings.
Combine eggs and mustard in a bowl and whisk well.
In seperate plates place flour and breadcrumbs.
Coat the calamari rings in flour, then dip in egg mixture and then coat in breadcrumbs.
Heat plenty of vegetable oil over medium-high heat. Deep-fry calamari in batches for 1–2 minutes or until golden brown.
Use a slotted spoon to transfer to a plate lined with paper towel.
Season with salt.
To make the dipping sauce, combine the lime juice, peanut oil, coriander, lime rind and sugar into a food processor and process until well combined.
Add salt and pepper to season.
Serve with dipping sauce or aioli, salad leaves, hot chips and lemon wedges.