A “squiz” is a slang term in New Zealand and Australia for a look or glance. The use of this vernacular signals to the audience that the story is set in New Zealand.
Laura notes the “yellow” fruit here to add to the characterization of the setting as a shining, summer garden. The presence of fruit and bright colors furthers the perfection of the garden party’s setting.
"passion-fruit ices..."See in text(The Garden Party)
Passion fruit is an edible fruit of the passion flower, which is grown in tropical locations around the world. In addition to the use of “squiz” earlier, the presence of passion fruit further suggests that the story is set in New Zealand.